PM6641 datasheet(9/47 Pages) STMICROELECTRONICS

9 / 47 page

PM6641

Electrical characteristics

9/47

Electrical characteristics

TA = 0 °C to 85 °C, AVCC = 5 V, VCC = 5 V , VIN_x = 3.3 V and LDOIN connected to 1.8 V

output if not otherwise specified, Note:

Table 6. Electrical characteristics

Symbol

Parameter

Test condition

Values

Unit

Min

Typ

Max

Supply section all rails

ICC

AVCC+VCC operating current

VVCC = +5 V , all switching

regulators active without load

3mA

ISHDN

Total shutdown current into

VIN_x + AVCC + VCC pins

VIN = VAVCC = VVCC = +5 V,

all EN_x low

µA

UVLOth

AVCC under voltage lockout

upper threshold

4.0

4.1

4.35

AVCC under voltage lockout

lower threshold

3.6

3.9

4.0

UVLO hysteresis

100

Error amplifier, FB AND SS – all rails

VREF

Error amplifier reference voltage VAVCC = VVCC = 5 V

792

800

808

IFB

FB input bias current

VFB_X = 0.8 V

ISS

Soft-start current

VSS_X = 0.4 V

µA

Oscillator frequency

fSW

Switching frequency

RSETSWF = 140 kΩ

500

kHz

SET_SWF to VCC

675

750

825

RSETSWF = 70 kΩ

1000

Comp all rails

COMP_x Transconductance

300

µS

UVP/OVP protectionS and PGOOD signal (SMPS only) all rails

OVPth

Overvoltage threshold

116

120

124

UVPth

Undervoltage threshold

PGth

Power-good upper threshold

106

110

115

Power-good lower threshold

IPG,LEAK

PG_x Outputs Leakeage

Current

PG_x tied to +5 V

VPG,LOW

PG_x Outputs Low Level

VFB_X = 0.6 V or 1V, IPG_X = 2 mA

250

Note:

All parameters at operating temperature extremes are guaranteed by design and statistical

analysis (not production tested).

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