Datasheet > A5973D_0808

A5973D_0808

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器开关
页数	文件大小	规格书
12页	780K
描述
Up to 2 A step down switching regulator for automotive applications

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A5973D_0808 数据手册

Electrical characteristics

A5973D

Electrical characteristics

Table 4.

Electrical characteristics

(T = -40 °C to 125 °C, V_CC= 12 V, unless otherwise specified)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Operating input

voltage range

V_CC

V₀= 1.235 V; I₀= 2 A

MOSFET on

resistance

R_DS(on)

0.250

0.5

= 5 V

2.25

2.5

212

3.5

Maximum limiting

current ⁽¹⁾

I_L

V_CC= 5 V, T_J= 25 °C

f_SW

Switching frequency

Duty cycle

250

280

100

kHz

Dynamic characteristics (see test circuit)

4.4 V < V_CC< 36 V,

20 mA < I₀< 2 A

V₅

Voltage feedback

Efficiency

1.198 1.235 1.272

V₀= 5 V, V_CC= 12 V

DC characteristics

Total operating

I_qop

I_q

quiescent current

Quiescent current

Duty cycle = 0; V_FB= 1.5 V

V_inh> 2.2 V

2.5

100

μA

Total stand-by

quiescent current

I_qst-by

V_{C C}= 36 V;

150

μA

V_inh> 2.2 V

Inhibit

Device ON

0.8

INH threshold voltage

Device OFF

2.2

3.5

Error amplifier

High level output

voltage

V_OH

V_FB= 1 V

Low level output

voltage

V_OL

V_FB= 1.5 V

0.4

Io source

190

300

1.5

μA

V_COMP= 1.9 V; V_FB= 1 V

V_COMP= 1.9 V; V_FB= 1.5 V

Source output current

Sink output current

Io sink

Source bias current

DC open loop gain

2.5

μA

RL = ∞

5/11

1 2 3 456 7 8...12

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