MAX1697SEUT#TG16-MAX1697TEUT+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1697SEUT#TG16 ,60mA, SOT23 Inverting Charge Pump with ShutdownELECTRICAL CHARACTERISTICS(Circuit of Figure 1, capacitors from Table 2, V = +5V, SHDN = IN, T = 0° ..
MAX1697S-EUTT ,60 mA, inverting charge pump with shutdown, 35 kHz.features an ultra-low12Ω output resistance, permitting loads of up to 60mA¤ 150µA Supply Current (M ..
MAX1697SEUT-T ,60 mA, inverting charge pump with shutdown, 35 kHz.ELECTRICAL CHARACTERISTICS(Circuit of Figure 1, capacitors from Table 2, V = +5V, SHDN = IN, T = 0° ..
MAX1697TEUT+T ,60mA, SOT23 Inverting Charge Pump with Shutdownfeatures an ultra-low♦ ♦150µA Supply Current (MAX1697R)12Ω output resistance, permitting loads of u ..
MAX1697UEUT-T ,60 mA, inverting charge pump with shutdown, 250 kHz.Applicationsbelow and insert the suffix in the blank above to complete thepart number.Negative Supp ..
MAX1698AEUB , High-Efficiency Step-Up Current Regulator for LEDs
MAX4505EUK ,Fault-Protected, High-Voltage, Signal Line ProtectorELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, T = T to T , unless otherwise noted. ..
MAX4505EUK+T ,Fault-Protected, High-Voltage, Signal Line ProtectorApplicationsOrdering InformationProcess Control SystemsPIN- TOPPART TEMP. RANGEPACKAGE MARKHot-Inse ..
MAX4506CPA ,Fault-Protected / High-Voltage Signal-Line ProtectorsApplications MAX4506C/D 0°C to +70°C Dice*MAX4506ESA -40°C to +85°C 8 SOProcess-Control Systems MAX ..
MAX4506CSA ,Fault-Protected / High-Voltage Signal-Line ProtectorsFeaturesThe MAX4506/MAX4507 multiple, two-terminal signal-line' Overvoltage Protectionprotectors ar ..
MAX4506CSA+ ,Fault-Protected, High-Voltage Signal-Line ProtectorsMAX4506/MAX450719-1415; Rev 2; 2/03Fault-Protected, High-Voltage Signal-Line Protectors
MAX4506ESA+ ,Fault-Protected, High-Voltage Signal-Line ProtectorsFeaturesThe MAX4506/MAX4507 multiple, two-terminal signal-line♦ Overvoltage Protectionprotectors ar ..

MAX1697SEUT#TG16-MAX1697TEUT+T
60mA, SOT23 Inverting Charge Pump with Shutdown
General Description
The MAX1697 ultra-small, monolithic, CMOS charge-
pump voltage inverter accepts an input voltage ranging
from +1.25V to +5.5V. This device features an ultra-low
12Ωoutput resistance, permitting loads of up to 60mA
with maximum efficiency. The MAX1697 is available
with operating frequencies of 12kHz, 35kHz, 125kHz, or
250kHz, allowing optimization of supply current or
external component size. Its small external components
and micropower shutdown mode make this device
ideal for both battery-powered and board-level voltage
conversion applications.
Oscillator control circuitry and four power MOSFET
switches are included on-chip. Applications include
generating a negative supply from a +5V or +3.3V logic
supply to power analog circuitry. All versions come in a
6-pin SOT23 package and deliver 60mA.
For applications with lower current requirements, the
MAX1719/MAX1720/MAX1721 are pin-compatible
SOT23 charge pumps that supply up to 25mA.
Applications
Negative Supply from +5V or +3.3V Logic Supplies
Small LCD Panels
GaAsFET Bias Supplies
Handy-Terminals, PDAs
Battery-Operated Equipment
Features♦60mA Output Current ♦Low 12ΩOutput Resistance♦150µA Supply Current (MAX1697R)♦Requires Only Two 1µF Capacitors (MAX1697U)♦Start-Up Current Limited♦+1.25V to +5.5V Input Voltage Range♦Slew-Rate Limited to Reduce EMI
MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
SHDN5
TOP VIEW
GNDC1-
C1+OUT
SOT236
MAX169724
Pin Configuration
C1+C1-
SHDN
OUT
GND
1μF
1μF
OFF
INPUT
1.5V to 5.5V
NEGATIVE
OUTPUT
-1 ✕ VIN
60mA
MAX1697U
Typical Operating Circuit
19-1499; Rev 3; 12/08
Note 1: The MAX1697 requires special solder temperature pro-
file described in the Absolute Maximum Ratings section.
Note 2: The MAX1697 is available with four different operating
frequencies. Choose the desired frequency from the table
below and insert the suffix in the blank above to complete the
part number.
Ordering InformationPART TEMP RANGE PIN-PACKAGE
MAX1697_EUT-T-40°C to +85°C6 SOT23
TOP MARKPART NO.
SUFFIX
FREQUENCY
(kHz)-T+T#T12AABVAABVACBT35AABWAABWACCK125AABXAABXACCL250AABYAABYACCM
Note 3:MAX1697 is available in different package material.
Add the following suffix to the part number when ordering:
-T = Denotes a package containing lead(Pb).
+T = Denotes a lead(Pb)-free/RoHS-compliant package.
#T = Denotes an RoHS-compliant device that may include
lead(Pb) that is exempt under the RoHS requirements.
Note 4:Leaded and lead-free top marks are identical. Per
Maxim guideline, the pin 1 indicator for leaded package is
a ‘•’ and the lead-free package is a ‘+’.
MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= 0°C to +85°C, unless otherwise noted. Typical values are at= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN to GND.................................................................-0.3V to +6V
C1+, SHDNto GND.....................................-0.3V to (VIN + 0.3V)
C1- to GND..............................................(VOUT- 0.3V) to + 0.3V
OUT to GND.............................................................+0.3V to -6V
OUT Output Current............................................................90mA
OUT Short-Circuit to GND.............................................Indefinite
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 14mW/°C above +70°C) (Note 5)...1.1W
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature ..........................................................(Note 6)
MAX1697T/U, RL= 5kΩ
SHDN= GND or IN
VIN(MIN)≤VIN≤2.5V
MAX1697R/S, RL= 5kΩ
2.5V ≤VIN≤5.5V
VIN(MIN)≤VIN≤2.5V
2.5V ≤VIN≤5.5V
IOUT= 0, TA= +25°C
SHDN= GND, OUT is internally pulled to GND
in shutdown= +25°C= +25°C
SHDN= GND
IOUT= 60mA
CONDITIONSnA-1000.05+100SHDNBias Current
0.2V0.6SHDNInput Logic Low
VIN- 0.2V2.0SHDNInput Logic High38OUT to GND Shutdown
ResistanceΩ1225Output Resistance (Note 7)
1.55.5V
Supply Voltage Range9999.9Voltage Conversion Efficiency3550kHzOscillator Frequency
Quiescent Supply Current
(Note 9)
3506500.0021Shutdown Supply Current
UNITSMINTYPMAXPARAMETER= 0°C to +85°C= +25°C= 0°C to +85°C= +25°C
MAX1697S
MAX1697R= +85°C= +25°C= 0°C to +85°C= +25°C= +85°C= +25°C
MAX1697U
MAX1697T9501700
Output shorted to ground, TA= +25°CmA170Short-Circuit Current
MAX1697R
MAX1697S
MAX1697T
MAX1697U
Note 5:Thermal properties are specified with product mounted on the PC board with one square-inch of copper area and still air.
Note 6:This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the
device can be exposed to during board level solder attach and rework. Maxim recommends the use of the solder profiles
recommended in the industry standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection
reflow processes. Preheating, per this standard, is required. Hand or wave soldering is not recommended.
MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= -40°C to +85°C, unless otherwise noted.) (Note 8)
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= 0°C to +85°C, unless otherwise noted. Typical values are at= +25°C.)
CONDITIONS
UNITSMINTYPMAXPARAMETER
Note 7:Output resistance is guaranteed with capacitor ESR of 0.3Ωor less.
Note 8:All specifications from -40°C to +85°C are guaranteed by design, not production tested.
Note 9:The MAX1697 may draw high supply current during startup, up to the minimum operating supply voltage. To guarantee
proper startup, the input supply must be capable of delivering 90mA more than the maximum load current.
Trip Temperature°C
Hysteresis°C15
Temperature increasing
THERMAL SHUTDOWNRL= 5kΩSupply Voltage Range1.65.5
MAX1697R
VIN(MIN)≤VIN≤2.5V
2.5V ≤VIN≤5.5V
VIN(MIN)≤VIN≤2.5V
2.5V ≤VIN≤5.5V
MAX1697T/U
SHDN= GND, OUT is internally pulled to GND in
shutdown
Continuous, long-term
Quiescent Current
(Note 9)
MAX1697T
MAX1697R
IOUT= 60mA
CONDITIONS
kHz
MAX1697S
MAX1697U
Oscillator Frequency1660
MAX1697T60200
MAX1697S
MAX1697U
MAX1697R/S
0.2V0.6SHDNInput Logic Low
VIN- 0.2V2.1SHDNInput Logic High8OUT to GND Shutdown
ResistanceΩOutput Resistance (Note 7)
mARMS60Output Current
UNITSMINMAXPARAMETERIOUT= 15mAWake-Up Time from ShutdownMAX1697U
1200MAX1697R
MAX1697S
MAX1697T
MAX1697R/S/T/U
OUTPUT IMPEDANCE vs. INPUT VOLTAGE
MAX1697 TOC09
INPUT VOLTAGE (V)
OUTPUT IMPEDANCE (
MAX1697U
EFFICIENCY vs. OUTPUT CURRENT
MAX1697 TOC08
OUTPUT CURRENT (mA)
EFFICIENCY (%)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697
MAX1697T
EFFICIENCY vs. OUTPUT CURRENT
MAX1697 TOC07
OUTPUT CURRENT (mA)
EFFICIENCY (%)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697R
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX1697 TOC01
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697U
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX1697 TOC04
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697S
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX1697 TOC02
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697T
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX1697 TOC03
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697R
EFFICIENCY vs. OUTPUT CURRENT
MAX1697 TOC05
OUTPUT CURRENT (mA)
EFFICIENCY (%)
VIN = +2V
VIN = +5V
VIN = +3.3V
MAX1697S
EFFICIENCY vs. OUTPUT CURRENT
MAX1697 TOC06
OUTPUT CURRENT (mA)
EFFICIENCY (%)VIN = +2V
VIN = +5V
VIN = +3.3V
Typical Operating Characteristics
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= +25°C, unless otherwise noted.)
60mA, SOT23 Inverting Charge Pump
with Shutdown
MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1697 TOC10
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
MAX1697R
MAX1697S
MAX1697T
MAX1697U
MAX1697R/S/T/U
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1697 TOC11
TEMPERATURE (°C)
SUPPLY CURRENT (nA)VIN = +2V
VIN = +3.3V
VIN = +5V
MAX1697R
OUTPUT RESISTANCE
vs. TEMPERATURE
MAX1697 TOC12
TEMPERATURE (°C)
OUTPUT RESISTANCE (
VIN = +2V
VIN = +1.5V
VIN = +5V
VIN = +3.3V
MAX1697S
OUTPUT RESISTANCE
vs. TEMPERATURE
MAX1697 TOC13
TEMPERATURE (°C)
OUTPUT RESISTANCE (
VIN = +2V
VIN = +1.5V
VIN = +5V
VIN = +3.3V
PUMP FREQUENCY
vs. TEMPERATURE
MAX1697 TOC16
TEMPERATURE (°C)
PUMP FREQUENCY (kHz)
MAX1697U
MAX1697T
MAX1697S
MAX1697R
VIN = +1.5V TO +5V
MAX1697T
OUTPUT RESISTANCE
vs. TEMPERATURE
MAX1697 TOC14
TEMPERATURE (°C)
OUTPUT RESISTANCE (
VIN = +2V
VIN = +1.5V
VIN = +5V
VIN = +3.3V
MAX1697U
OUTPUT RESISTANCE
vs. TEMPERATURE
MAX1697 TOC15
TEMPERATURE (°C)
OUTPUT RESISTANCE (
VIN = +2V
VIN = +1.5V
VIN = +5V
VIN = +3.3V
VOUT
MAX1697R
(12kHz)
VOUT
MAX1697S
(35kHz)
MAX1697R/S
OUTPUT NOISE AND RIPPLE
MAX1697 TOC17
20μs/div
VIN = +3.3V, IOUT = 5mA,
10mV/div, AC-COUPLED
VOUT
MAX1697T
(125kHz)
VOUT
MAX1697U
(250kHz)
MAX1697T/U
OUTPUT NOISE AND RIPPLE
MAX1697 TOC18
2μs/div
VIN = +3.3V, IOUT = 5mA,
10mV/div, AC-COUPLEDypical Operating Characteristics (continued)
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= +25°C, unless otherwise noted.)
MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdownypical Operating Characteristics (continued)
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= +25°C, unless otherwise noted.)
SHDN
MAX1697S
(35kHz)
VOUT, 2V/div
MAX1697R
(12kHz)
VOUT, 2V/div
START-UP FROM SHUTDOWN
MAX1697 TOC19
400μs/div
MAX1697U
(250kHz)
VOUT, 2V/div
MAX1697T
(125kHz)
VOUT, 2V/div
START-UP FROM SHUTDOWN
MAX1697 TOC20
50μs/div
SHDN1015205253035454050
MAX1697R
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC21
CAPACITANCE (μF)
OUTPUT CURRENT (mA)
VIN = +4.75V, VOUT = -4.0V
VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V10152052530354045
MAX1697S
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC22
CAPACITANCE (μF)
OUTPUT CURRENT (mA)
VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V
MAX1697R
OUTPUT RIPPLE vs. CAPACITANCE
MAX1697 TOC25
CAPACITANCE (μF)
OUTPUT RIPPLE (mV)VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V23415679810
MAX1697T
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC23
CAPACITANCE (μF)
OUTPUT CURRENT (mA)
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V
VIN = +1.9V, VOUT = -1.5V23415679810
MAX1697U
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC24
CAPACITANCE (μF)
OUTPUT CURRENT (mA)
VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V
MAX1697S
OUTPUT RIPPLE vs. CAPACITANCE
MAX1697 TOC26
CAPACITANCE (μF)
OUTPUT RIPPLE (mV)
VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V
Detailed Description
The MAX1697 capacitive charge pumps invert the volt-
age applied to their input. For highest performance, use
low equivalent series resistance (ESR) capacitors (e.g.,
ceramic).
During the first half-cycle, switches S2 and S4 open,
switches S1 and S3 close, and capacitor C1 charges to
the voltage at IN (Figure 2). During the second half-
cycle, S1 and S3 open, S2 and S4 close, and C1 is level
shifted downward by VINvolts. This connects C1 in par-
allel with the reservoir capacitor C2. If the voltage across
C2 is smaller than the voltage across C1, charge flows
from C1 to C2 until the voltage across C2 reaches
-VIN. The actual voltage at the output is more positive
than -VIN, since switches S1–S4 have resistance and the
load drains charge from C2.
Efficiency Considerations
The efficiency of the MAX1697 is dominated by its qui-
escent supply current (IQ) at low output current and by
its output impedance (ROUT) at higher output current; it
is given by:II x R
OUT
OUTQ
OUTOUT+−⎛⎜⎞⎟
MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
MAX1697T
OUTPUT RIPPLE vs. CAPACITANCE
MAX1697 TOC27
CAPACITANCE (μF)
OUTPUT RIPPLE (mV)
VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V
MAX1697U
OUTPUT RIPPLE vs. CAPACITANCE
MAX1697 TOC28
CAPACITANCE (μF)
OUTPUT RIPPLE (mV)
VIN = +1.9V, VOUT = -1.5V
VIN = +3.15V, VOUT = -2.5V
VIN = +4.75V, VOUT = -4.0V
Pin DescriptionPositive Terminal of the Flying
CapacitorInverting Charge-Pump OutputPower-Supply Voltage Input. Input
range is 1.5V to 5.5V.Negative Terminal of the Flying
Capacitor Ground
Shutdown Input. Drive this pin high
for normal operation; drive it low for
shutdown mode. OUT is actively
pulled to ground during shutdown.
PINFUNCTIONNAME
C1+
OUT
C1-
GND
SHDNypical Operating Characteristics (continued)
(Circuit of Figure 1, capacitors from Table 2, VIN= +5V, SHDN= IN, TA= +25°C, unless otherwise noted.)
TE: ( ON
OFF
C1+C1-
SHDN
OUT
GND
INPUT
1.5V to 5.5VNEGATIVE
OUTPUT
-1 ✕ VIN
MAX1697
Figure 1. Typical Application Circuit

Partno	Mfg	Dc	Qty	Available	Descript
MAX1697SEUT#TG16 \|MAX1697SEUTTG16	MAXIM	N/a	2500	avai	60mA, SOT23 Inverting Charge Pump with Shutdown
MAX1697TEUT+T	MAXIM	N/a	2500	avai	60mA, SOT23 Inverting Charge Pump with Shutdown