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MAX1735EUK30-T ,200mA / Negative-Output / Low-Dropout Linear Regulator in SOT23ApplicationsOrdering InformationDisk DrivesPIN-PART TEMP. RANGEModems PACKAGEInstrumentation Amplif ..
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 ..
MAX4565CWP ,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. ..
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 ..

MAX1735EUK30-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
Typical Operating Circuit
19-1783; Rev 0; 7/00
Pin Configuration
Ordering Information
Output-Voltage Selector Guide
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 +0.3VSHDNto 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
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 (
SUPPLY CURRENT
vs. LOAD CURRENT
MAX1735 toc02
LOAD CURRENT (mA)
SUPPLY CURRENT (
SUPPLY CURRENT
vs. TEMPERATURE
MAX1735 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1735 toc04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
OUTPUT VOLTAGE CHANGE
vs. LOAD CURRENT
MAX1735 toc05
LOAD CURRENT (mA)
OUTPUT VOLTAGE CHANGE (%)
OUTPUT VOLTAGE CHANGE
vs. TEMPERATURE
MAX1735 toc06
TEMPERATURE (°C)
OUTPUT VOLTAGE CHANGE (%)
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
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.)
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 (
Pin Description
Typical Operating Characteristics (continued)
(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
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).

Partno	Mfg	Dc	Qty	Available	Descript
MAX1735EUK30-T \|MAX1735EUK30T	MAXIM	N/a	593	avai	200mA / Negative-Output / Low-Dropout Linear Regulator in SOT23