MAX1735EUK25-MAX1735EUK25+-MAX1735EUK30-MAX1735EUK50+-MAX1735EUK50+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1735EUK50+ ,200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23FeaturesThe MAX1735 negative-output, low-dropout linear regu-♦ Guaranteed 200mA Output Currentlator ..
MAX1735EUK50+T ,200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23FeaturesThe MAX1735 negative-output, low-dropout linear regu-♦ Guaranteed 200mA Output Currentlator ..
MAX1736EUT42+T ,SOT23, Single-Cell Li+ Battery Charger for Current-Limited SupplyApplicationsMAX1736EUT42-T -40°C to +85°C 6 SOT23-6 AAHOWireless HandsetsMAX1736EUT41-T -40°C to +8 ..
MAX1737 ,Stand-Alone Switch-Mode Lithium-Ion Battery-Charger ControllerApplicationsINPUT SUPPLYNotebook Computers Li+ Battery PacksCSSPDCINHand-Held Instruments Desktop C ..
MAX1737EEI ,Stand-Alone Switch-Mode Lithium-Ion Battery-Charger ControllerApplicationsINPUT SUPPLYNotebook Computers Li+ Battery PacksCSSPDCINHand-Held Instruments Desktop C ..
MAX1737EEI ,Stand-Alone Switch-Mode Lithium-Ion Battery-Charger ControllerFeaturesThe MAX1737 is a switch-mode lithium-ion (Li+) battery Stand-Alone Charger for Up to Four ..
MAX4565EAP ,Quad/Dual / Low-Voltage / Bidirectional RF/Video SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V = 0.8V, V = 2. ..
MAX4565EWP ,Quad/Dual / Low-Voltage / Bidirectional RF/Video SwitchesApplications______________Ordering InformationRF SwitchingVideo Signal RoutingPART TEMP. RANGE PIN- ..
MAX4566CEE ,Quad/Dual / Low-Voltage / Bidirectional RF/Video SwitchesMAX4565/MAX4566/MAX456719-1252; Rev 0; 7/97Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches__ ..
MAX4566CEE+ ,Quad Dual, Low-Voltage, Bidirectional RF Video SwitchesApplications______________Ordering InformationRF SwitchingVideo Signal RoutingPART TEMP. RANGE PIN- ..
MAX4566CSE ,Quad/Dual / Low-Voltage / Bidirectional RF/Video SwitchesFeaturesThe MAX4565/MAX4566/MAX4567 are low-voltage ' High 50Ω Off Isolation: -83dB at 10MHzT-switc ..
MAX4566CSE ,Quad/Dual / Low-Voltage / Bidirectional RF/Video SwitchesMAX4565/MAX4566/MAX456719-1252; Rev 0; 7/97Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches__ ..

MAX1735EUK25-MAX1735EUK25+-MAX1735EUK30-MAX1735EUK50+-MAX1735EUK50+T
200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
General Description
The MAX1735 negative-output, low-dropout linear regu-
lator operates from a -2.5V to -6.5V input and delivers a
guaranteed 200mA with a low 80mV dropout. The high-
accuracy (±1%) output voltage is preset or can be
adjusted from -1.25V to -5.5V with an external resistive
voltage-divider.
An internal N-channel MOSFET allows for a low 85µA
quiescent current virtually independent of the load,
making this device ideal for battery-powered portable
equipment, such as PDAs, mobile phones, cordless
phones, and wireless data modems.
The device is available in several preset output voltage
versions: -5.0V, -3.0V, and -2.5V. All versions offer a
1nA low-power shutdown mode, short-circuit protec-
tion, and thermal overload protection. The device is
offered in a tiny 5-pin SOT23 package.
Applications
Disk Drives
Modems
Instrumentation Amplifiers
Notebook Computers
Mobile and Cordless Telephones
PCMCIA Cards
GaAsFET Bias
Mobile Wireless Data Modems
PDAs and Palmtop Computers
FeaturesGuaranteed 200mA Output CurrentLow 80mV Dropout Voltage at 200mALow 85µA Quiescent Supply CurrentLow 1nA Current Shutdown Mode Stable with 1µF COUTPSRR >60dB at 100HzThermal Overload ProtectionShort-Circuit Protection-5.0V, -3.0V, or -2.5V Output Voltage
or Adjustable (-1.25V to -5.5V)Tiny SOT23-5 Package
MAX1735
200mA, Negative-Output, Low-Dropout
Linear Regulator in SOT23
SETSHDNOUTGND
MAX1735
SOT23-5
TOP VIEW
MAX1735
SHDN
-6.5V TO -2.5V
INPUT
-5V, -3V, OR -2.5V
OUTPUT
UP TO 200mA
CINCOUT
OUTIN
SET
GND
GND
OFF
Typical Operating Circuit
19-1783; Rev 1; 11/03
Pin Configuration
Ordering Information
PARTTEMP RANGEPIN-
PACKAGE
MAX1735EUK50-T-40°C to +85°C5 SOT23-5
MAX1735EUK30-T-40°C to +85°C5 SOT23-5
MAX1735EUK25-T-40°C to +85°C5 SOT23-5
Output-Voltage Selector Guide
PARTPRESET OUTPUT
VOLTAGE
SOT TOP
MARK
MAX1735EUK50-T-5.0V or adjADOZ
MAX1735EUK30-T-3.0V or adjADOY
MAX1735EUK25-T-2.5V or adjADOX
MAX1735
200mA, Negative-Output, Low-Dropout
Linear Regulator in SOT23
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 2, VIN= VOUT- 1V, VSHDN= VIN, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
(Note 1)
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, SET to GND ....................................................-7.0V to +0.3V
SHDNto GND ............................................(VIN- 0.3)V to +7.0V
OUT to GND ...............................................(VIN- 0.3)V to +0.3V
Output Short-Circuit Duration........................................Indefinite
Continuous Power Dissipation (TA= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range............................-65°C to +150°C
Lead Temperature (soldering, 10s)................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Input VoltageVIN-6.5-2.5V
TA = +25°C, IOUT = -100µA-1+1
IOUT = -100µA, TA = 0°C to +85°C-2+2Output Voltage Accuracy
ILOAD = -100µA to -200mA-3+2
Circuit of Figure 3, TA = +25°C, IOUT = -100µA-1.2625-1.25-1.2375
Circuit of Figure 3, IOUT = -100µA,
TA = 0°C to +85°C-1.275-1.225SET Regulation Set Point
Circuit of Figure 3, ILOAD = -100µA to -200mA-1.275-1.2125
Maximum Output CurrentIOUT-200mA
Current LimitILIMVOUT = 0-1020-515-250mA
IOUT = -100µA-180-85Ground-Pin CurrentIQIOUT = -200mA-125µA
IOUT = -100mA40Dropout Voltage (Note 2)IOUT = -200mA80240mV
Line RegulationCircuit of Figure 3,
VIN from -6.5V to -2.5V, VOUT = -1.25V-0.150+0.15%/V
Load RegulationIOUT from 0mA to -200mA0.004%/mA
Output Voltage Noise10Hz to 1MHz, COUT = 1µF160µVRMS
Power-Supply Rejection RatioPSRRf = 100Hz60dB
TA = +25°C-1-0.001Shutdown Supply CurrentV SHDN = 0TA = +85°C-1µA
Positive voltage at SHDN+1.6SHDN Input High Threshold
(Note 3)Negative voltage at SHDN-1.6V
Positive voltage at SHDN+0.4SHDN Input Low Threshold
(Note 3)Negative voltage at SHDN-0.4V
Set Input Bias CurrentISETVSET = -1.25V, TA = +25°C-100-15nA
V SHDN = +6.5V3.5SHDN Input Bias CurrentTA = +25°CV SHDN = 0, -6.5V-0.5+0.5µA
Thermal Shutdown Junction
TemperatureHysteresis = 15°C (typ)160°C
Note 1:Limits are 100% production tested at TA= +25°C. Limits over operating temperature range are guaranteed by design.
Note 2:The dropout voltage is defined as VOUT- VIN, when VOUTis 100mV above the nominal value of VOUT.
Note 3:The SHDNlogic input can be driven by either a positive voltage or a negative voltage. | VSHDN| < 0.4V puts the device in shutdown,
while | VSHDN| > 1.6V enables the device.
MAX1735
200mA, Negative-Output, Low-Dropout
Linear Regulator in SOT23
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1735 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
ILOAD = 200mA
SUPPLY CURRENT
vs. LOAD CURRENT
MAX1735 toc02
LOAD CURRENT (mA)
SUPPLY CURRENT (
SUPPLY CURRENT
vs. TEMPERATURE
MAX1735 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (
NO LOAD
ILOAD = 200mA
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1735 toc04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
TA = +25°C
TA = +85°C
TA = -40°C
VOUT = -2.9V
OUTPUT VOLTAGE CHANGE
vs. LOAD CURRENT
MAX1735 toc05
LOAD CURRENT (mA)
OUTPUT VOLTAGE CHANGE (%)
VOUT = -3V
TA = -40°C
TA = +25°C
TA = +85°C
OUTPUT VOLTAGE CHANGE
vs. TEMPERATURE
MAX1735 toc06
TEMPERATURE (°C)
OUTPUT VOLTAGE CHANGE (%)
ILOAD = 200mA
NO LOAD
Typical Operating Characteristics
(Circuit of Figure 2, VIN= -4.0V, VOUT= -3.0V, TA= +25°C, unless otherwise specified.)
MAX1735
200mA, Negative-Output, Low-Dropout
Linear Regulator in SOT23
REGION OF STABLE ESR
vs. LOAD CURRENT
MAX1735 toc10
LOAD CURRENT (mA)
REGION OF STABLE ESR C
OUT
COUT = 1μF
REGION OF STABILITY
LINE-TRANSIENT RESPONSE
MAX1735 toc11
TIME (100μs/div)
VOUT
50mV/div
VIN
1V/div
LOAD-TRANSIENT RESPONSE
(NORMAL OPERATION)
MAX1735 toc12
TIME (100μs/div)
ILOAD STEP
0 to 50mA
VOUT
10mV/div
LOAD-TRANSIENT RESPONSE
(NEAR DROPOUT)
MAX1735 toc13
TIME (100μs/div)
ILOAD STEP
0 to 50mA
VOUT
10mV/div
Typical Operating Characteristics (continued)
(Circuit of Figure 2, VIN= -4.0V, VOUT= -3.0V, TA= +25°C, unless otherwise specified.)100101k10k100k
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX1735 toc07
FREQUENCY (Hz)
PSRR (dB)
COUT = 10μF
COUT = 1.0μF
0.011k100k
OUTPUT NOISE DENSITY
vs. FREQUENCY
MAX1735 toc08
FREQUENCY (Hz)
OUTPUT NOISE (
RMS
Hz)
OUTPUT NOISE
(10Hz TO 1MHz)
MAX1735 toc09
TIME (1ms/div)
500μV/div
COUT = 1μF
ILOAD = 50mA
MAX1735
200mA, Negative-Output, Low-Dropout
Linear Regulator in SOT23
SHUTDOWN RESPONSE
(DRIVEN FROM A POSITIVE VOLTAGE)
MAX1735 toc14a
TIME (200μs/div)
VSHDN
2V/div
VOUT
2V/div
SHUTDOWN RESPONSE
(DRIVEN BY A NEGATIVE VOLTAGE)
MAX1735 toc14b
TIME (200μs/div)
VSHDN
2V/div
VOUT
2V/div
SHUTDOWN-PIN BIAS CURRENT
vs. SHUTDOWN-PIN VOLTAGE
MAX1735 toc15
SHUTDOWN-PIN VOLTAGE (V)
SHUTDOWN-PIN BIAS CURRENT (
INVALID LOGIC VOLTAGEINVALID LOGIC VOLTAGE
Pin Description
PINNAMEFUNCTIONGNDGround
2IN
Regulator Input. Supply voltage can range from -2.5V to -6.5V. Bypass with a 1μF capacitor to GND
(see Capacitor Selection and Regulator Stability). This pin also functions as a heatsink. Solder to a
large PC board pad or directly to the PC board power plane to maximize thermal dissipation.SHDN
Shutdown Input. Drive SHDN to GND to turn the regulator off, reducing the input current to less than
1nA. Drive SHDN above +1.6V or below -1.6V to enable the regulator. Connect SHDN to IN for
always-on operation.SET
Dual Mode™ Regulator Feedback Input. Connect SET to GND for the preset output voltage. Use a
resistive voltage-divider from OUT to SET to set the output voltage between -1.25V and -5.5V.
Regulation setpoint is -1.25V.OUTRegulator Output. OUT supplies up to 200mA in regulation. Bypass to GND with a 1μF ceramic
capacitor.
Typical Operating Characteristics (continued)
(Circuit of Figure 2, VIN= -4.0V, VOUT= -3.0V, TA= +25°C, unless otherwise specified.)
Dual Mode is a trademark of Maxim Integrated Products, Inc.
MAX1735
200mA, Negative-Output, Low-Dropout
Linear Regulator in SOT23
Detailed Description
The MAX1735 is a low-dropout negative linear voltage
regulator. It features Dual Mode operation, allowing a
fixed -5.0V, -3.0V, or -2.5V output voltage or an
adjustable output from -1.25V to -5.5V. The regulator is
guaranteed to supply 200mA of output current. It fea-
tures 60dB power-supply rejection for noise-sensitive
applications and a low 85µA operating current that opti-
mizes it for battery-operated devices.
As Figure 1 illustrates, the device consists of an internal
-1.25V reference, an error amplifier, an N-channel
MOSFET, an internal precision-trimmed feedback volt-
age-divider, and a Dual Mode comparator.
The -1.25V reference is connected to the inverting input
of the error amplifier. The error amplifier compares the
reference voltage with the selected feedback voltage
and amplifies the difference. The error amplifier drives
the MOSFET to control the output voltage.
The feedback voltage for regulation is generated by
either an internal or external resistive voltage-divider
connected from OUT to SET. The internal Dual Mode
comparator selects the feedback path based on VSET.
Connect SET to GND to use the internal feedback path,
setting the output voltage to the preset value. If an
external voltage-divider is used, see Output Voltage
Selection.
Internal N-Channel MOSFET
The MAX1735 features an N-channel MOSFET pass
transistor. Unlike similar designs using NPN bipolar
pass transistors, N-channel MOSFETs require extreme-
ly low drive currents, reducing overall quiescent cur-
rent. Also, NPN-based regulators consume still more
base current in dropout conditions when the pass tran-
sistor saturates. The MAX1735 does not suffer from
these problems, consuming only 125µA total current at
full load and in dropout.
Output Voltage Selection
The MAX1735 features Dual Mode operation, allowing for
a preset or adjustable output voltage. In preset voltage
mode, the output of the MAX1735 is set to -5.0V, -3.0V, or
-2.5V (see Ordering Information). Select this mode by
connecting SET to GND (Figure 2).
OFF
THERMAL
SENSORNMOS
PASS
TRANSISTOR
OUT
COUT
SET
GND
Dual Mode
COMPARATOR
ERROR
AMPLIFIER
VREF
-1.25V
-270mV
SHUTDOWN
LOGIC
SHDN
CIN
MAX1735GND
Figure 1. Functional Diagram

Partno	Mfg	Dc	Qty	Available	Descript
MAX1735EUK25		N/a	2	avai	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
MAX1735EUK25+	N/A	N/a	2500	avai	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
MAX1735EUK30	MAXIM	N/a	266	avai	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
MAX1735EUK50+	MAX	N/a	5000	avai	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
MAX1735EUK50+T	N/A	N/a	2500	avai	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23