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MAX1735

200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23

Maxim Integrated 

200mA, Negative-Output, Low-Dropout

Linear Regulator in SOT23

ABSOLUTE MAXIMUM RATINGS

IN, SET to GND .................................................... -7.0V to +0.3V

SHDN to 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

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.

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 2, VIN = VOUT - 1V, V SHDN = VIN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

(Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Input Voltage

Output Voltage Accuracy

VIN

-6.5

-2.5

V

TA = +25°C, IOUT = -100µA

-1

+1

IOUT = -100µA, TA = 0°C to +85°C

-2

+2

%

ILOAD = -100µA to -200mA

-3

+2

Circuit of Figure 3, TA = +25°C, IOUT = -100µA -1.2625 -1.25 -1.2375

SET Regulation Set Point

Circuit of Figure 3, IOUT = -100µA,

TA = 0°C to +85°C

-1.275

-1.225 V

Maximum Output Current

Current Limit

Ground-Pin Current

Dropout Voltage (Note 2)

IOUT

ILIM

IQ

Circuit of Figure 3, ILOAD = -100µA to -200mA -1.275

-1.2125

-200

mA

VOUT = 0

-1020 -515 -250 mA

IOUT = -100µA

IOUT = -200mA

IOUT = -100mA

IOUT = -200mA

-180 -85

µA

-125

40

mV

80

240

Line Regulation

Circuit of Figure 3,

VIN from -6.5V to -2.5V, VOUT = -1.25V

-0.15

0

+0.15 %/V

Load Regulation

Output Voltage Noise

Power-Supply Rejection Ratio

PSRR

IOUT from 0mA to -200mA

10Hz to 1MHz, COUT = 1µF

f = 100Hz

0.004

160

60

%/mA

µVRMS

dB

Shutdown Supply Current

SHDN Input High Threshold

(Note 3)

SHDN Input Low Threshold

(Note 3)

V SHDN = 0

TA = +25°C

TA = +85°C

Positive voltage at SHDN

Negative voltage at SHDN

Positive voltage at SHDN

Negative voltage at SHDN

-1 -0.001

µA

-1

+1.6

V

-1.6

+0.4

V

-0.4

Set Input Bias Current

SHDN Input Bias Current

ISET VSET = -1.25V, TA = +25°C

TA = +25°C

V SHDN = +6.5V

V SHDN = 0, -6.5V

-100 -15

nA

3.5

µA

-0.5

+0.5

Thermal Shutdown Junction

Temperature

Hysteresis = 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 VOUT is 100mV above the nominal value of VOUT.

Note 3: The SHDN logic 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.

2 _______________________________________________________________________________________

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