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ML4870CS-3

High Current Boost Regulator with Load Disconnect

Micro Linear Corporation 

ABSOLUTE MAXIMUM RATINGS

Absolute maximum ratings are those values beyond which

the device could be permanently damaged. Absolute

maximum ratings are stress ratings only and functional

device operation is not implied.

VOUT ............................................................................................... 7V

Voltage on any other pin ..... GND - 0.3V to VOUT + 0.3V

Peak Switch Current (IPEAK) ......................................... 2A

Average Switch Current (IAVG) ..................................... 1A

Junction Temperature .............................................. 150°C

Storage Temperature Range ..................... –65°C to 150°C

Lead Temperature (Soldering, 10 sec) ..................... 260°C

Thermal Resistance (qJA) .................................... 160°C/W

ML4870

OPERATING CONDITIONS

Temperature Range

ML4870CS-X .............................................. 0°C to 70°C

ML4870ES-X ........................................... -20°C to 70°C

VIN Operating Range ....................... 1.8V to VOUT - 0.2V

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, VIN = Operating Voltage Range, TA = Operating Temperature Range (Note 1)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

SUPPLY

IIN(Q) VIN Quiescent Current

IOUT(Q) VOUT Quiescent Current

PFM REGULATOR

VIN = VOUT - 0.2V, SHDN = 0V

VIN = SHDN = 2.4V, VOUT = 0V

SHDN = 0V

VIN = SHDN = 2.4V

VOUT = VOUT(NOM)

3

6

0.3

1

25

35

14

20

IPEAK

VOUT

IL Peak Current

Output Voltage

IOUT = 0

See Figure 1

1.1

1.3

1.6

-3 Suffix 3.30

3.35

3.40

-5 Suffix 4.95

5.05

5.15

Load Regulation

SHUTDOWN

-3 Suffix, VIN = 2.4V, IOUT = 400mA

-5 Suffix, VIN = 2.4V, IOUT = 220mA

3.20

4.85

3.25

4.95

3.40

5.15

VIL Input Low Voltage

VIH Input High Voltage

Input Bias Current

0.5

VIN - 0.5

-100

100

UNITS

µA

µA

µA

µA

A

V

V

V

V

V

V

nA

Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions.

3

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