PM8903 datasheet(9/34 Pages) STMICROELECTRONICS

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PM8903

Electrical specifications

Doc ID 022748 Rev 1

9/34

4.3

Electrical characteristics

VIN = VCC = 3.3 V ± 5%, TJ = 0 °C to 125 °C, typical values at TJ = 25 °C, unless otherwise

specified.

Table 6.

Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Supply current and undervoltage lockout

IIN

VIN supply current

Switching, no inductor connected

ICC

VCC supply current

Switching, no inductor connected

ISHUTDOWN VCC + VIN supply current

Shutdown, EN = 0 V

μA

VIN UVLO

VIN turn-ON

VIN rising

2.8

Hysteresis

100

Deglitching(1)

Rising and falling edge

μs

VCC UVLO

VCC turn-ON

VCC rising

2.9

Hysteresis

100

Deglitching(1)

Rising and falling edge

μs

Oscillator

FSW

Main oscillator accuracy

RPM=0 Ω / 24 kΩ / 180 kΩ / 240 kΩ

or PSKIP/MS pin floating

0.99

1.1

1.21

MHz

ΔVOSC

PWM ramp amplitude(1)

Duty cycle(1)

0100

TON-min

Minimum ON time(1)

TOFF-min

Minimum OFF time(1)

Reference and error amplifier

Output voltage accuracy

VOUT = 0.6 V

-1

DC gain(1)

120

GBWP

Gain-bandwidth product(1)

MHz

Slew-rate(1)

CCOMP=20 pF

μs

Output power MOSFETS

HS RDS-on

HS drain-source ON

resistance

LS RDS-on

LS drain-source ON

resistance

Overcurrent protection

IOC1

1st level overcurrent

threshold

HS sourcing

4.0

4.6

5.2

IOC2

2nd level overcurrent

threshold (1)

HS sourcing

4.5

5.2

5.9

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