MAX761EPA+-MAX761ESA+-MAX761ESA-T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX761EPA+ ,12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC ConvertersFeaturesThe MAX761/MAX762 step-up switching regulators ♦ High Efficiency for a Wide Range of Load C ..
MAX761ESA ,12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC ConvertersMAX761/MAX76219-0201; Rev 0; 11/9312V/15V or Adjustable, High-Efficiency,Low I , Step-Up DC-DC Conv ..
MAX761ESA ,12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC ConvertersGeneral Description ________
MAX761ESA+ ,12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC ConvertersApplications* Contact factory for dice specifications.High-Efficiency DC-DC Converters** Contact f ..
MAX761ESA-T ,12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC ConvertersELECTRICAL CHARACTERISTICS(V+ = 5V, I = 0mA, C = 0.1μF, T = T to T typical values are at T = +25°C, ..
MAX7624CPE ,CMOS 8-Bit Buffered Multiplying DACsWuan-eDem. 1947173, Rev 1 7/95 lVI/J X I/VI CMOS B-Bit Buffered Multiplying DACs
MB6M ,MINIATURE GLASS PASSIVATED SINGLE-PHASE BRIDGE RECTIFIERThermal Characteristics (TA = 25°C unless otherwise noted)Parameter Symbol MB2M MB4M MB6M UnitDevic ..
MB6S ,Bridge RectifiersThermal Characteristics (T = 25°C unless otherwise noted)AParameter Symbol MB2S MB4S MB6S UnitDevic ..
MB7117E , Schottky TTL 2048-Bit Bipolar Programmable Read-Only Memory
MB71A38-25 , PROGRAMMABLE SCHOTTKY 16384-BIT READ ONLY MEMORY

MAX761EPA+-MAX761ESA+-MAX761ESA-T
12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC Converters
_______________General Description
The MAX761/MAX762 step-up switching regulators
provide high efficiency over a wide range of load currents,
delivering up to 150mA. A unique, current-limited
pulse-frequency-modulated (PFM) control scheme gives
the devices the benefits of pulse-width-modulated (PWM)
converters (high efficiency with heavy loads), while using
less than 110μA of supply current (vs. 2mA to 10mA for
PWM converters). The result is high efficiency over a wide
range of loads.
The MAX761/MAX762 input voltage range is 2V to 16.5V.
Output voltages are preset to 12V (MAX761) and 15V
(MAX762), or they can be set with two external resistors.
With a 5V input, the MAX761 guarantees a 12V, 150mA
output. Its high efficiency, low supply current, fast start-up
time, SHDN controlling capability, and small size make the
MAX761 ideal for powering flash memory.
The MAX761/MAX762 have an internal 1A power MOS-
FET, making them ideal for minimum-component, low- and
medium-power applications. These devices use tiny exter-
nal components, and their high switching frequencies (up
to 300kHz) allow for small surface-mount magnetics.
For increased output drive capability or higher output volt-
ages, use the MAX770–MAX773, which are similar in
design to the MAX761/MAX762, but drive external power
MOSFETs. For stepping up to 5V, see the MAX756/
MAX757 and MAX856-MAX859 data sheets.
_________________________Applications
Flash Memory Programming
PCMCIA Cards
Battery-Powered Applications
High-Efficiency DC-DC Converters
____________________________FeaturesHigh Efficiency for a Wide Range of Load Currents12V/150mA Flash Memory Programming Supply110μA Max Supply Current5μA Max Shutdown Supply Current2V to 16.5V Input Voltage Range12V (MAX761), 15V (MAX762) or Adjustable OutputCurrent-Limited PFM Control Scheme300kHz Switching FrequencyInternal, 1A, N-Channel Power FETLBI/LBO Low-Battery Comparator
______________Ordering Information2V/15V or Adjustable, High-Efficiency,
Low IQ, Step-Up DC-DC Converters
________________________________________________________________Maxim Integrated Products1
GND
REFSHDN
LBI
LBO
MAX761
MAX762
DIP/SO
TOP VIEW
__________________Pin Configuration
MAX761
LBI
SHDNV+
REF
OUTPUT
12V
150mA
LOW-BATTERY
DETECTOR OUTPUTLOW-BATTERY
DETECTOR INPUT
INPUT
4.75V
TO 12V
ON/OFF
GND
LBO
33µF
33µF
18µH
__________Typical Operating Circuit
Call toll free 1-800-998-8800 for free samples or literature.
19-0201; Rev 0; 11/93
PARTTEMP. RANGEPIN-PACKAGE
MAX761CPA0°C to +70°C8 Plastic DIP
MAX761CSA0°C to +70°C8 SO
MAX761C/D0°C to +70°CDice*
MAX761ESA-40°C to +85°C8 SO
MAX761EPA-40°C to +85°C8 Plastic DIP
MAX761MJA-55°C to +125°C8 CERDIP**
MAX762CPA0°C to +70°C8 Plastic DIP
MAX762CSA0°C to +70°C8 SO
MAX762C/D0°C to +70°CDice*
MAX762EPA-40°C to +85°C8 Plastic DIP
MAX762ESA-40°C to +85°C8 SO
MAX762MJA-55°C to +125°C8 CERDIP**
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
Evaluation Kit Available
2V/15V or Adjustable, High-Efficiency,Low IQ, Step-Up DC-DC Converters_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V+ to GND.......................................-0.3V to 17V
REF, LBO, LBI, SHDN, FB............................-0.3V to (V+ + 0.3V)
LX..............................................................................-0.3V to 17V
LX Peak Current....................................................................1.5A
LBO Current..........................................................................5mA
Continuous Power Dissipation (TA= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C)............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
CERDIP (derate 8.00mW/°C above +70°C).................640mW
Operating Temperature Ranges:
MAX76_C_A........................................................0°C to +70°C
MAX76_E_A.....................................................-40°C to +85°C
MAX76_MJA..................................................-55°C to +125°C
Junction Temperatures:
MAX76_C_A/E_A..........................................................+150°C
MAX76_MJA.................................................................+175°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
ELECTRICAL CHARACTERISTICS
(V+ = 5V, ILOAD= 0mA, CREF= 0.1μF, TA= TMINto TMAX, typical values are at TA= +25°C, unless otherwise noted.)
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.
PARAMETERSYMBOLMINTYPMAX110
Minimum Start-Up Voltage1.72.0V
Minimum Operating Voltage1.7V
Supply Current
Shutdown Current15μA
11.5212.012.4816.516.5Supply VoltageV+
Output Voltage
(Note 1)VOUT
Peak Current at LXIPEAK0.751.01.25A
Maximum Switch-On TimetON6810μs
Minimum Switch-Off TimetOFF1.01.31.6μs
Load Regulation0.0042%/mA
Line Regulation0.08%/V
Efficiency86%
1.46251.501.5375Reference VoltageVREF
CONDITIONS
Figure 2,
MAX761,
bootstrapped
V+ = 16.5V, normal operation, SHDN = 0V,
non-bootstrapped
Figure 2, bootstrapped
Figure 2, bootstrapped
Figure 2, MAX761, VIN= 5V, SHDN = 0V,
normal operation
Figure 2,
MAX762,
bootstrapped
V+ = 10.0V, shutdown mode, SHDN = V+
See Figure 4b
Figure 2, 0mA ≤ILOAD≤200mA, bootstrapped
Figure 2, bootstrapped
Figure 2, 4V ≤VIN≤6V, bootstrapped
Figure 2, bootstrapped, VOUT= 12V,
60mA ≤ILOAD≤120mA
Figure 3 or 5 with
external resistors.
MAX76_C
MAX76_E
MAX76_M
MAX76_C/E
MAX76_M
UNITS
0mA ≤ILOAD≤75mA,
3V ≤V+ ≤12V
0mA ≤ILOAD≤150mA,
4.75V ≤V+ ≤12V
0mA ≤ILOAD≤50mA,
3V ≤V+ ≤15V
0mA ≤ILOAD≤100mA,
4.75V ≤V+ ≤15V
2V/15V or Adjustable, High-Efficiency,Low IQ, Step-Up DC-DC Converters
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, ILOAD= 0mA, CREF= 0.1μF, TA= TMINto TMAX, typical values are at TA= +25°C, unless otherwise noted.)
Note 1:See Typical Operating Characteristicsfor output current capability versus input voltage. Guarantees based on correlation
to switching on and off times, on-resistance, and peak-current ratings.
PARAMETER
Voltage Trip Point
SYMBOLMINTYPMAX
VFB
UNITS
LX On Resistance
LX Leakage Current
SHDN Input High Voltage
-4040FB Leakage CurrentIFB
VIH1.6V
SHDN Input Low VoltageVIL
0.4V
SHDN Leakage Current-11μA
Reference Load Regulation
LBI Threshold Voltage
LBI Hysteresis20mV
LBI Leakage Current
Reference Line Regulation
-2020nAmV
LBO Leakage Current-11μA
LBO VoltageVOL0.4V
LBI to LBO Delay2.5μs
CONDITIONS
MAX76_M
MAX76_C
V+ > 5.0V
V+ = 16.5V,
LX = 17V
MAX76_E
MAX76_M
2.0V ≤V+ ≤16.5V
2.0V ≤V+ ≤16.5V
MAX76_C
MAX76_E
V+ = 16.5V, SHDN = 0V or V+
LBI falling
0μA ≤ILOAD≤100μA
V+ = 16.5V, VLBI= 1.5V
3.0V ≤V+ ≤16.5V
V+ = 16.5V, VLBO= 16.5V
V+ = 5.0V, ISINK= 1mA
Overdrive = 5mV
MAX76_C
MAX76_M
MAX76_E100μV/V
MAX76_C/E
MAX76_M
MAX76_C
MAX76_M
MAX76_E
2V/15V or Adjustable, High-Efficiency,Low IQ, Step-Up DC-DC Converters_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(Circuit of Figure 2, TA= +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
BOOTSTRAPPED
AX761-01
OUTPUT CURRENT (mA)
(%100
VIN = 10V
VIN = 5V
VIN = 2V
VOUT = 12V
EFFICIENCY vs. OUTPUT CURRENT
NON-BOOTSTRAPPED
MAX761-02
OUTPUT CURRENT (mA)
FIC
IEN
(%100
VIN = 10V
VIN = 5V
VOUT = 12V
QUIESCENT CURRENT vs.
INPUT VOLTAGE
MAX761-03
INPUT VOLTAGE (V)
(m4
VOUT = 12V
BOOTSTRAPPED
(INTERNAL RESISTORS)
BOOTSTRAPPED
(EXTERNAL RESISTORS)
NON-BOOTSTRAPPED
MAXIMUM OUTPUT CURRENT vs.
INPUT VOLTAGE
MAX761-04
SUPPLY VOLTAGE (V)
(m
NON-BOOTSTRAPPED
BOOTSTRAPPED
VOUT = 12V
NO-LOAD START-UP VOLTAGE
MAX761-07
TEMPERATURE (°C)
(V100
VOUT = 12V
BOOTSTRAPPED(INTERNAL RESISTORS)
BOOTSTRAPPED
(EXTERNAL RESISTORS)
NON-BOOTSTRAPPED
(EXTERNAL RESISTORS)
REFERENCE OUTPUT RESISTANCE vs.
TEMPERATURE
AX761-05
TEMPERATURE (°C)
E O
(W100
100µA
50µA
10µA1.502
REFERENCE vs.TEMPERATURE
COEFFICIENT
MAX761-06
TEMPERATURE (°C)
(V100-4008040120
MAX761
START-UP VOLTAGE vs. RLOAD
MAX761-08
RLOAD (kW)
T-U
(V
VOUT = 12V
BOOTSTRAPPED
INTERNAL RESISTORS
LX ON-RESISTANCE vs.
TEMPERATURE
MAX761-09
TEMPERATURE (°C)
(W100
V+ = 12V
V+ = 5V
2V/15V or Adjustable, High-Efficiency,Low IQ, Step-Up DC-DC Converters
_______________________________________________________________________________________5
LX LEAKAGE vs. TEMPERATURE
MAX761-10
(n
TEMPERATURE (°C)
V+ = 15V
VLX = 16.5V
PEAK CURRENT AT LX vs. TEMPERATURE
MAX761-11
TEMPERATURE (°C)
IPE
(A100-4008040120
V+ = 12V
V+ = 5V
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX761-12
TEMPERATURE (°C)
ICC
(µ100-4008040120
V+ = 15V
V+ = 4V
V+ = 8V
SWITCH-ON TIME vs. TEMPERATURE
MAX761-13
TEMPERATURE (°C)
(µ120
V+ = 5V
SWITCH-OFF TIME vs. TEMPERATURE
MAX761-14
TEMPERATURE (°C)
ff (µ120
V+ = 5V
POWER-SUPPLY CURRENT
vs. TEMPERATURE
MAX761-15
TEMPERATURE (°C)
(µ120
V+ = 3V
V+ = 16.5V
SWITCH-ON/SWITCH-OFF TIME RATIO
vs.TEMPERATURE
AX761-16
TEMPERATURE (°C)
n/to
ff R
(µ
s/µ120
V+ = 5V
SHDN RESPONSE TIME
ILOAD = 100mA, VIN = 5V
A: VOUT, 2V/div
B: SHDN (0V to 4V)
2ms/div
12V
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 2, TA= +25°C, unless otherwise noted.)
2V/15V or Adjustable, High-Efficiency,Low IQ, Step-Up DC-DC Converters_______________________________________________________________________________________
LOAD–TRANSIENT RESPONSE
A: ILOAD, (0mA to 200mA)
B: VOUT , AC COUPLED, 100mV/div
VIN = 5V, VOUT = 12V
5µs/div
200mA
0mA
_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 2, TA= +25°C, unless otherwise noted.)
LINE–TRANSIENT RESPONSE
A: VIN (4V to 6V)
B: VOUT, AC COUPLED, 20mV/div
IOUT = 50mA, VOUT = 12V
5ms/div
NAMEFUNCTION
LBOLow-battery output is an open-drain output that goes low when LBI is less than 1.5V.
Connect to V+ through a pull-up resistor. Leave LBO floating if not used.
LBIInput to the internal low-battery comparator. Tie to GND or V+ if not used.
PIN
Feedback input. For fixed-output bootstrapped operation, connect FB to GND. For
adjustable-output bootstrapped operation, connect a resistor divider between V+, FB and
GND. For non-bootstrapped operation, there is no fixed-output option. Connect a resistor
divider network between VOUT, FB and GND. See Bootstrapped/Non-Bootstrapped
Modessection.
SHDN
Active-high TTL/CMOS logic-level input. In shutdown mode (SHDN = V+), the internal
switch is turned off and the output voltage equals V+ minus a diode drop (due to the DC
path from the input to the output). Tie to GND for normal operation.
REF1.5V reference output that can source 100μA for external loads. Bypass with 0.1μF
or larger capacitor.
GNDGround Drain of the internal N-channel FET. LX has an output resistance of 1Ωand a peak current
limit of 1A. Power-supply input. In bootstrapped mode, V+ is also the output voltage sense input.
______________________________________________________________Pin Description

Partno	Mfg	Dc	Qty	Available	Descript
MAX761EPA+	N/A	N/a	2500	avai	12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC Converters
MAX761ESA+ \|MAX761ESA	MAXIM	N/a	1000	avai	12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC Converters
MAX761ESA-T \|MAX761ESAT	MAXI	N/a	1	avai	12V/15V or Adjustable, High-Efficiency, Low-IQ, Step-Up DC-DC Converters