AAT1171 Datasheet, PDF (4/22 Pages) Advanced Analogic Technologies – 600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch

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
V_IN
V_UVLO
V_OUT
V_DACIN
Description
Input Voltage
UVLO Threshold
UVLO Hysteresis
V_OUT Programmable Range
Input Voltage Range from DAC
I_Q
Quiescent Current
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
R_DS(ON)BP
I_LXLEAK
ΔV_OUT/V_OUT
ΔV_OUT/
V_OUT*ΔV_IN
R_OUT
V_OUT
F_OSC
T_SD
T_HYS
I_LL
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
Bypass Switch Resistance
LX Leakage Current
Load Regulation
Line Regulation
Feedback Impedance
Output Voltage Accuracy
Oscillator Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Light Load Load Current Threshold
t_VOUTS
Output Voltage Settling Time
Conditions
Min Typ Max Units
2.7
5.5
V
V_IN Rising
2.6
V
200
mV
0.6
3.6
V
0.2
1.2
V
No Load, Light Load
No Load, PWM, V_CC Bias Current
EN = AGND = PGND
45 70
420
µA
1.0 µA
T_A = 25°C
1.2 1.6
A
230
mΩ
230
mΩ
V_DAC = 1.3V or BYPASS = VIN
V_CC = 5.5V, V_LX = 0 to V_CC
I_LOAD = 0 to 500mA
85
mΩ
1
µA
0.5
%
0.2 %/V
V_DAC = 0.6V, I_LOAD = 0
170
kΩ
1.746 1.8 1.854 V
2.0
MHz
140
°C
V_OUT = 0.6V to V_OUT(MAX),
MODE/SYNC = V_IN
15
°C
100
mA
30
µs
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.
4
1171.2006.06.1.0