AAT2522 Datasheet, PDF (4/19 Pages) Skyworks Solutions Inc. – Dual High-Current, Low-Noise, Step-Down Regulator

DATA SHEET
AAT2522
Dual High-Current, Low-Noise, Step-Down Regulator
Electrical Characteristics
C_IN = 10μF, C_OUT = 22μF, L = 1.5μH. VIN1 = VIN2 = 3.6V, IN1 = VCC1 = EN1, IN2 = VCC2 = EN2, AGND = PGND. T_A
= -40°C to 85°C, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol Description
V_IN
V_OUT
V_FB
Input Voltage Range
Output Voltage Range
Output Voltage Tolerance
FB Regulation Threshold
I_Q
No Load Supply Current
I_SHDN
Shutdown Current
I_FB
FB Leakage Current
ΔV_OUT(LOAD) Load Regulation
ΔV_OUT/V_IN Line Regulation
f_OSC
Oscillator Frequency
t_SS
Soft-Start Period
Protection Features
V_UVLO
T_SHDN
Input Under-Voltage Lockout
Over-Temperature Shutdown
Threshold
MOSFETs
R_DS(ON)HI
High-Side P-Channel MOSFET
On-Resistance
I_LIMPK
High-Side P-Channel MOSFET
Current Limit
R_DS(ON)LO Low-Side N-Channel On-Resistance
Logic Input/Output Pins
V_EN
EN Input Logic Threshold
I_EN
EN Input Current
Conditions
I_OUT = 0 to 3A, V_IN = 2.7V to 5.5V
No Load, T_A = 25°C
Including IN1, VCC1, IN2, and VCC2 supply
currents; No Load Current; not switching
EN = GND
V_FB = 1.0V
0A to 3A Load
V_IN = 2.7V to 5.5V
V_IN Rising, Hysteresis = 0.25V
Hysteresis = 15°C
0V, V_IN
Min
2.7
0.6
-3.0
591
3.6¹
0.6
-1.0
Typ
600
90
0.5
0.2
1.40
150
Max
5.5
V_IN
+3.0
609
Units
V
V
%
mV
180
μA
1.0
μA
200
nA
%
%/V
MHz
μs
2.7
V
140
°C
120
mΩ
A
85
mΩ
1.4
V
+1.0 μA
1. Specified by design.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202032A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012