PM6641 查看數據表（PDF） - STMicroelectronics

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PM6641

Monolithic VR for chipset and DDR2/3 supply for ultra-mobile PC (UMPC) applications

STMicroelectronics 

Electrical characteristics

4

Electrical characteristics

PM6641

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 (a).

Table 6. Electrical characteristics

Symbol

Parameter

Test condition

Supply section all rails

ICC

ISHDN

UVLOth

AVCC+VCC operating current

Total shutdown current into

VIN_x + AVCC + VCC pins

AVCC under voltage lockout

upper threshold

AVCC under voltage lockout

lower threshold

UVLO hysteresis

VVCC = +5 V, all switching

regulators active without load

VIN = VAVCC = VVCC = +5 V,

all EN_x low

Error amplifier, FB AND SS – all rails

VREF

IFB

ISS

Error amplifier reference voltage VAVCC = VVCC = 5 V

FB input bias current

VFB_X = 0.8 V

Soft-start current

VSS_X = 0.4 V

Oscillator frequency

fSW

Switching frequency

Comp all rails

RSETSWF = 140 kΩ

SET_SWF to VCC

RSETSWF = 70 kΩ

gm

COMP_x transconductance

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

OVPth

UVPth

PGth

IPG,LEAK

VPG,LOW

Overvoltage threshold

Undervoltage threshold

Power good upper threshold

Power Good lower threshold

PG_x outputs leakeage current PG_x tied to +5 V

PG_x outputs low level

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

Values

Unit

Min Typ Max

3 mA

10 μA

4.0 4.1 4.35

V

3.6

3.9

4.0

100

mV

792 800 808 mV

25 nA

10

μA

500

675 750 825 kHz

1000

300

µS

116 120 124

56

60

64

%

106 110 115

86

90

94

1

µA

250 mV

10/47

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

(not production tested).

Doc ID 13510 Rev 3

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