STW4510 datasheet(36/57 Pages) STMICROELECTRONICS

tên linh kiện	STW4510

Giải thích chi tiết về linh kiện	2 step-down DC/DC converters / 5 LDO power management

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Electrical and timing characteristics

STw4510

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4.2

Power supply

Note:

STw4510 sleep mode is only active with the presence of the 32 kHz clock on pin Clk32_in

and

STw4510 has different ways to go in sleep mode.

In all the following tables:

●

High power mode is defined as “SLEEP = ‘0’”,

●

“Sleep mode” is defined as “SLEEP = ‘1’

4.2.1

Operating conditions

4.2.2

Vref18

Table 16.

Operating conditions

Symbol

Description

Test conditions

Min.

Typ.

Max.

Units

VBAT

Power supply

2.7

5.5

IQSLEEP

Quiescent current

Sleep mode

170

250

µA

IQSTDBY

Off mode (T = 25°C)

µA

Table 17.

Vref18

Symbol

Description

Test conditions

Min.

Typ.

Max.

Units

VBAT

Supply voltage

2.7

5.5

VREF_18

Output voltage

1.78

1.8

1.84

PSRR

Power supply rejection

ratio

≤100 kHz

Noise

100Hz

≤f ≤100 kHz

µV

Settling time(1)

7.8

Delay until Pon rises at high level and 1.8 V is available on Vref18 pin.

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