PM6685 查看數據表（PDF） - STMicroelectronics

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PM6685

Dual step-down main supply controller with auxilary voltages for notebook system power

STMicroelectronics 

Electrical characteristics

4

Electrical characteristics

PM6685

VIN = 12V, TA = 0°C to 85°C, unless otherwise specified

Table 5. Electrical characteristics

Symbol

Parameter

Test condition

Min Typ

Supply section

VIN

Input voltage range

Vout=Vref, LDO5 in regulation

5.5

FSEL to GND

Vcc

IC supply voltage

4.5

Turn-on voltage threshold

4.8

VV5SW

Turn-off voltage threshold

Hysteresis

4.6

4.75

20

50

VV5SW Maximum operating range

LDO5 internal bootstrap

Rdson

V5SW > 4.9V

1.8

switch resistance

LDO3 internal bootstrap

VOUT3 = 3.3V

1.8

switch resistance

OUT3, OUT5 discharge mode

Rdson on-resistance

16

OUT3, OUT5_ discharge mode

synchronous rectifier turn-on

level

0.2

0.35

VOUT5>5.1V,VOUT3>3.34V

Pin

Operating power consumption V5SW to 5V

LDO5, LDO3 no load

Ish

VIN shutdown current

SHDN connected to GND,

14

Isb

VIN standby current

ENx to GND, V5SW to GND,

LDO3_SEL to 5V

270

Shutdown section

VSHDN

Device on threshold

Device off threshold

1.2

1.5

0.8

0.85

Soft start section

Soft start ramp time

2

Max Unit

28

V

5.5

V

4.9

V

V

mV

5.5

V

3

Ω

3

Ω

25

Ω

0.5

V

4

mW

18

µA

380

µA

1.7

V

0.9

V

3.5

ms

10/52

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