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MAX8704

High-Current, Low-Voltage Linear Regulator with Power-Limited, External MOSFET

Maxim Integrated 

High-Current, Low-Voltage Linear Regulator

with Power-Limited, External MOSFET

ABSOLUTE MAXIMUM RATINGS

VCC, VIN to GND.......................................................-0.3V to +6V

CSP, CSN, DRV to GND ...........................................-0.3V to +6V

FB, PLIM, SS/EN, PGOOD to GND.............-0.3V to (VCC + 0.3V)

Continuous Power Dissipation (TA = +70°C)

10-Pin µMAX (derated 5.6mW/°C above +70°C) .........444mW

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

(VIN = 2.5V, VCC = 5.0V, PLIM = FB = GND, CSP = CSN, SS/EN floating, TA = 0°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Input Voltage Range

Preset Output Voltage

(Fixed)

VIN

VCC

VOUT

FB = VCC

FB = GND

1.0

5.5

V

4.5

5.5

1.462 1.50 1.538

V

1.170 1.20 1.230

Feedback Voltage Accuracy

(Adjustable)

VFB

FB = CSN

490

500

510

mV

Load-Regulation Error

Line-Regulation Error

FB Input Bias Current

CSN Input Bias Current

IFB

ICSN

VCSP - VCSN = 45mV

VIN = 1V to 5.5V

VFB = 0.6V

VCSN = 1.6V

-2.5

-2

%

0.01

%

-1

+1

µA

50

100

µA

DRV Output Voltage Swing

VDRV

Output high

Output low

VCC - VCC -

1.0

0.7

V

0.7

1.0

DRV Slew Rate

CDRV = 40nF

0.2

V/µs

Quiescent Supply Current (VCC)

ICC

FB forced above the regulation point,

VCSN = 1.6V

1.5

3

mA

Quiescent Supply Current (VIN)

IIN

FB forced above the regulation point,

VCSN = 1.6V

5

10

µA

Shutdown Supply Current (VCC)

Shutdown Supply Current (VIN)

FAULT DETECTION

Thermal-Shutdown Threshold

SS/EN = GND

SS/EN = GND

TSHDN Rising edge, 20°C hysteresis

35

70

µA

5

10

µA

+140

°C

VCC Undervoltage-Lockout

Threshold

Rising edge, 15mV hysteresis

4.2

4.45

V

Current-Limit Threshold

Power-Limit Threshold

VCSLIMIT PLIM = GND

VPWRLIMIT Rising edge

45

50

57

mV

0.96

1.0

1.04

V

Power-Limit Conversion Gain

KPLIM

VCSP - VCSN = 30mV, VCSN = 0.5V,

VIN = 3.5V

155

200

233

µA/V2

Power-Limit Conversion Gain

Variation

VCSP - VCSN = 25mV to 45mV, VCSN = 0.5V,

±12

%

VIN = 2V to 4.5V

2 _______________________________________________________________________________________

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