AAT2514_08 Datasheet, PDF (4/14 Pages) Advanced Analogic Technologies – Dual Channel 600mA Step-Down Converter

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PRODUCT DATASHEET
AAT2514
Dual Channel 600mA Step-Down Converter
Electrical Characteristics
V_IN = V_EN = 3.6V, T_A = 25°C, unless otherwise noted.
Symbol Description
Step-Down Converter
V_IN
Input Voltage Range
I_Q
Input DC Supply Current
V_FB
Regulated Feedback
Voltage
I_FB
ΔV_OUT/
V_OUT/ΔV_IN
ΔV_OUT/
V_OUT/ΔI_OUT
I_LIM
T_S
T_SD
T_HYS
F_OSC
R_DS(ON)
V_EN(L)
V_EN(H)
I_EN
FB Input Bias Current
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Maximum Output Current
Startup Time
Over-Temperature
Shutdown Threshold
Over-Temperature
Shutdown Hysteresis
Oscillator Frequency
P-Channel MOSFET
N-Channel MOSFET
Peak Inductor Current
Enable Threshold Low
Enable Threshold High
EN Input Current
Power-On Reset
Threshold (POR)
Conditions
Active Mode, V_FB = 0.5V
Shutdown Mode, EN1 = EN2 = 0V, V_IN = 4.2V
T_A = 25°C, Channel 1 or 2
T_A = 0°C ≤ T_A ≤ +85°C, Channel 1 or 2
T_A = -40°C ≤ T_A ≤ +85°C, Channel 1 or 2 (See Note 2)
V_IN = 2.5V to 5.5V, I_OUT = 10mA
I_OUT = 10mA to 600mA
V_IN = 3.0V
From Enable to Output Regulation
V_FB = 0.6V
I_LX = 300mA
I_LX = 300mA
V_IN = 3V, V_FB = 0.5V; Duty Cycle <35%
V_FB Ramping Up
V_FB Ramping Down
Power-On Reset Delay
Power-On Reset On-Resistance
Min
2.5
0.5880
0.5865
0.5850
-30
600
1.2
1.5
-1.0
Typ
500
0.3
0.6000
0.6000
0.6000
0.11
0.0015
100
140
15
1.5
0.35
0.28
1.20
8.5
-8.5
175
100
Max
5.5
800
2.0
0.6120
0.6135
0.6150
30
0.40
1.8
0.45
0.45
0.3
1.0
Units
V
μA
V
nA
%/V
%/mA
mA
μs
°C
°C
MHz
Ω
A
V
V
μA
%
ms
Ω
1. Specifications over the temperature range are guaranteed by design and characterization.
2. The regulated feedback voltage is tested in an internal test mode that connects VFB to the output of the error amplifier.
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2514.2008.02.1.1