A5973AD

更新时间： 2024-01-19 03:33:10

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
19页	1108K
描述
Up to 1.5 A step down switching regulator for automotive applications

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A5973AD 数据手册

A5973AD

Electical 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

R_DS(on)

I_L

V₀=1.235 V; I₀= 2 A

Ω

Mosfet on resistance

0.250

2.3

0.5

Maximum limiting

current

V_CC= 5 V

1.8

f_SW

Switching frequency

Duty cycle

430

500

570

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

µA

quiescent current

Quiescent current

Duty cycle=0;V_FB=1.5 V

V_inh> 2.2 V

2.7

100

Total stand-by quiescent

current

I_qst-by

Inhibit

Device ON

0.8

0.4

INH threshold voltage

Device OFF

2.2

3.5

Error amplifier

V_OH

V_OL

High level output voltage V_FB= 1 V

Low level output voltage V_FB= 1.5 V

V_COMP= 1.9 V;

_FB= 1 V

Io source

190

300

1.5

µA

Source output current

Sink output current

V_COMP= 1.9 V;

_FB= 1 V

Io sink

Source bias current

DC open loop gain

2.5

µA

RL = ∞

5/19

1 2 3 456 7 8...19

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