STW4510 datasheet(38/57 Pages) STMICROELECTRONICS

номер детали	STW4510

подробное описание детали	2 step-down DC/DC converters / 5 LDO power management

PDF	57 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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38 / 57 page

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Product(s)

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Electrical and timing characteristics

STw4510

38/57

4.2.4

Vsdc2 DC/DC step-down converter

Lirt

Transient line regulation

Vsdc1 = 1.2 V

IOUT = 200 mA

ΔVBAT = 300 mV

tR = tF = 10 µs

7mV

Ldrt

Transient load regulation

Vsdc1 = 1.2 V

IOUT: [1; 400] mA

tR = tF = 100ns

Guaranteed by design

Quiescent current defined is the current measured on the power supply dedicated to the voltage Vsdc1

Table 18.

Vsdc1 DC/DC step-down converter (continued)

Symbol

Description

Test conditions

Min.

Typ.

Max.

Units

Table 19.

Vsdc2 DC/DC step-down converter

Symbol

Description

Test conditions

Min.

Typ.

Max.

Units

Vsdc2 regulator in high power mode (SLEEP = ‘0’)

VBAT

Input power supply

2.7

3.6

5.5

VOUT

Output voltage(1)

-3%

1.8

+3%

VRIPPLE

Output ripple

IOUT = 200 mA

mVpp

IOUT

Output current

600

PEFF

Power efficiency

IOUT = 200 mA

ISHORT

(2)

Short circuit current

limitation

0.9

1.2

1.4

(3)

Quiescent current

IOUT = 0 mA

µA

ILKG

Power-down current

en_vsdc2 = 0

1.5

µA

PSRR(2)

Power supply rejection

IOUT = 200 mA

Vpp = 0.3 V,

F: [0; 20] kHz

Rising time

(10 % to 90 %)

1ms

Lir

Line regulation

VBAT: [2.7; 5.5] V

Ldr

Load regulation

IOUT: [0.1; 600] mA

Lirt

Transient line regulation

IOUT = 200 mA

Δ VBAT= 300 mV

tR = tF = 10 µs

7mV

Ldrt

Transient load regulation

IOUT= [1; 400] mA

tR = tF = 100 ns

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