AAT2612 Datasheet, PDF (4/18 Pages) Skyworks Solutions Inc. – Step-Down DC/DC Converter With Three High PSRR LDOs

DATA SHEET
AAT2612
Step-Down DC/DC Converter With Three High PSRR LDOs
Electrical Characteristics¹
V_INBK = V_INL1 = V_INL2 = 3.6V, L = 2.2μH, C_{INL1, 2} = 2.2μF, C_INBK = 4.7μF, C_OUTBK = 10μF, C_{OUTL1, 2, 3} = 1μF, T_A= 25°C unless
otherwise noted.
Symbol Description
Conditions
PMU Operation
V_IN
Input Voltage
UVLO
Under-Voltage
Lockout
T_SD
Thermal Shutdown
I_Q
Quiescent Current
Logic Control
V_IH
Input Logic High
Threshold
V_IL
Input Logic Low
Threshold
DC-DC Step-Down Converter
I_SHDN
Shutdown Current
from INBK Pin
I_Q
Quiescent Current
I_LIM
P-Channel Current
Limit
V_OUT
Output Voltage
Range
V_{FB_ACC}
Feedback Voltage
Accuracy
f_SW
Operating Switch-
ing Frequency
R_DS(ON)H
High-Side Switch
On Resistance
R_DS(ON)L
Low-Side Switch
On Resistance
LDO
I_SHDN
I_LIM
Shutdown Current
Output Current
Limit
V_DROP
V_{OUTL_ACC}
Dropout Voltage
Output Voltage
Accuracy
ΔV_OUTL/
I_OUTL
V_OUTL/
V_INL
Load Regulation
Line Regulation
PSRR
Power Supply
Rejection Ratio
V_{OUTL_TC}
Output Voltage
Temperature Coef-
ficient
Rising
Hysteresis
Threshold
Hysteresis
V_ENBK > 1.5V, V_ENL1,2,3 >1.5V, no load
ENL1, ENL2, ENL3, ENBK
ENL1, ENL2, ENL3, ENBK
V_ENBK < 0.4V, V_{ENL 1, 2, 3} < 0.4V
V_{ENL 1, 2, 3} < 0.4V , V_ENBK >1.5V , I_OUTB = 0mA
V_INBK = 2.7V to 5.5V
T_A = -40°C to 85°C
I_OUTB = 200mA
I_OUTB = 200mA, V_INBK = 2.5V
I_OUTB = 200mA
I_OUTB = 200mA, V_INBK = 2.5V
V_ENBK = V_ENL < 0.4V
R_LOAD = 1Ω
I_OUTL = 300mA
T_A = -40°C to 85°C, 1mA load
1mA < I_OUTL < 300mA
V_INL1 = V_INL2 = 2.7V to 5.5V
C_OUT1,2,3 = 1μF,
V_INL = V_OUTL1,2,3 + 1V
f = 100Hz
f = 1kHz
f = 10kHz
I_OUT = 10mA
I_OUT = 150mA
I_OUT = 10mA
I_OUT = 150mA
I_OUT = 10mA
I_OUT = 150mA
Min
2.5
1.5
800
0.9
0.585
-3
Typ
1.9
150
140
15
220
Max
5.5
420
V_INBK
0.4
0.1
1
120
280
85%∙V_INBK
0.600
0.615
1.5
230
280
180
220
1
450
600
500
3
0.3
0.6
0.2
75
75
70
70
50
50
100
Units
V
V
mV
°C
°C
μA
V
V
μA
μA
mA
V
V
MHz
mΩ
mΩ
μA
mA
mV
%
%
%/V
dB
ppm/°C
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202407B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013