PM6675A datasheet(9/15 Pages) STMICROELECTRONICS

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PM6675A

Electrical characteristics

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Table 5. Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Current limit and zero crossing comparator

ICSNS

CSNS input bias current

100

110

µA

Comparator offset

-5

Positive current limit threshold

VPGND - VCSNS

-115

-100

-85

Fixed negative current limit

threshold

-130

-110

-90

VZC,OFFS Zero crossing comparatot offset

-10

-5

High and low side gate drivers

HGATE driver on-resistance

HGATE high state (pullup)

2.0

Ω

HGATE low state (pulldown)

1.8

2.7

LGATE driver on-resistance

LGATE high state(pullup)

1.4

2.1

LGATE low state (pulldown)

0.6

0.9

UVP/OVP protections and PGOOD signals

OVP

Over voltage threshold

112

115

118

UVP

Under voltage threshold

PGOOD

SMPS upper threshold

107

110

113

SMPS lower threshold

LDO upper threshold

107

110

113

LDO lower threshold

IPG,LEAK SPG and LPG leakeage current¹

SPG and LPG forced to 5.5V

µA

VPG,LOW SPG and LPG low level voltage

ILPG,SINK = ISPG,SINK = 4mA

150

250

Soft start section (SMPS)

Soft-start ramp time

(4 steps current limit)

Soft-start initial current limit

22.5

27.5

µA

Soft-start current limit step

22.5

27.5

Soft end section

Switching section discharge

resistance

Ω

LDO section discharge resistance

LDO section

VLREF

LDO reference voltage

0.594

0.6

0.606

VDROP

LDO drop-out voltage

VLOUT = 0.9V, ILOUT =1A,

-10% output drop

0.25

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