Datasheet > AAT1171

AAT1171

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		转换器开关放大器功率放大器
页数	文件大小	规格书
22页	791K
描述
600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch

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AAT1171 数据手册

AAT1171

600mA Voltage-Scaling Step-Down Converter

for RF Power Amplifiers with Bypass Switch

Electrical Characteristics¹

T_A= -40°C to +85°C, unless otherwise noted. V_IN= V_CC= 3.6V; typical values are T_A= 25°C.

Symbol

Description

Conditions

Min Typ Max Units

V_IN

Input Voltage

2.7

5.5

UVLO Threshold

V_INRising

2.6

V_UVLO

UVLO Hysteresis

200

V_OUT

V_OUTProgrammable Range

Input Voltage Range from DAC

0.6

0.2

3.6

1.2

V_DACIN

No Load, Light Load

No Load, PWM, V_CCBias Current

EN = AGND = PGND

T_A= 25°C

I_Q

Quiescent Current

µA

420

I_SHDN

I_LIM

Shutdown Current

1.0

µA

P-Channel Current Limit

High Side Switch On Resistance

Low Side Switch On Resistance

Bypass Switch Resistance

LX Leakage Current

1.2

1.6

230

R_DS(ON)H

R_DS(ON)L

R_DS(ON)BP

I_LXLEAK

mΩ

µA

V_DAC= 1.3V or BYPASS = VIN

V_CC= 5.5V, V_LX= 0 to V_CC

I_LOAD= 0 to 500mA

ΔV_OUT/V_OUTLoad Regulation

0.5

ΔV_OUT

V_OUT*ΔV_IN

Line Regulation

0.2

%/V

R_OUT

Feedback Impedance

Output Voltage Accuracy

Oscillator Frequency

Over-Temperature Shutdown

Threshold

170

kΩ

V_OUT

V_DAC= 0.6V, I_LOAD= 0

1.746 1.8 1.854

2.0

F_OSC

MHz

T_SD

140

°C

Over-Temperature Shutdown

Hysteresis

T_HYS

I_LL

100

°C

µs

Light Load Load Current Threshold

_OUT= 0.6V to V_OUT(MAX)

t_VOUTS

Output Voltage Settling Time

MODE/SYNC = V_IN

1. The AAT1171 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured

by design, characterization, and correlation with statistical process controls.

1171.2006.06.1.0

1 2 345 6 7...22

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