AAT1275_08 Datasheet, PDF (4/19 Pages) Advanced Analogic Technologies – Boost Converter with USB Power Switch

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PRODUCT DATASHEET
AAT1275
Boost Converter with USB Power Switch
Electrical Characteristics¹
V_CC = V_IN = 3.6V, V_OUT1 = 5V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol
V_IN, V_CC
V_OUTx
V_UVLO
Description
Operating Input Voltage Range
Maximum Output Voltage Range
Under-Voltage Lockout
I_Q
Quiescent Supply Current
I_SHDN
Shutdown Current
Boost Converter
I_O
Continuous Output Current
I_LIMIT
V_FB
V_OUT
∆V_OUT
(V_OUT*∆V_IN)
∆V_OUT/V_OUT
R_DS(ON)H
R_DS(ON)L
Input Switch Current Limit
FB Pin Regulation
Output Voltage Tolerance
Load Regulation
Line Regulation
High Side Switch On Resistance
Low Side Switch On Resistance
R_{DS(ON)_IN}
T_SS
Input Disconnect Switch
Soft-Start Time
η
Efficiency
F_OSC
Switching Frequency
Load Switch
R_DS(ON)
Current Limit Switch On Resistance
I_LIM
I_LIM(MIN)
Current Limit
Minimum Current Limit
T_RESP
T_ON
Current Limit Response Time
Turn-On Delay Time
T_OFF
V_{FLT_LOW}
Turn-Off Delay Time
FLT Logic Output Low
I_FLT
T_BLANK
FLT Logic Output High Leakage Current
Fault Blanking Time
Control
V_TH-L
EN Threshold Low
V_TH-H
I_EN
EN Threshold High
EN Input Leakage
T_J-TH
T_J-HYS
TJ Thermal Shutdown Threshold
TJ Thermal Shutdown Hysteresis
Conditions
No Load, Switching
No Load, Not Switching, V_FB = 1.5V
EN = GND
3V < V_IN < 5V, V_O = 5V
No Load, T_A = 25°C
I_LOAD = 0 to 500mA, V_IN = 2.7V to 5V
I_LOAD = 0 to 500mA
V_IN = 2.7V to 5V
V_OUT1 = 5V, I_OUT1 = 500mA
V_OUT1 = 5V, I_OUT1 = 500mA
V_OUT1 = 5V, I_OUT1 = 500mA
From Enable to Output Regulation
I_OUT1 = 250mA, L = 2.2µH, V_IN = 3.6V,
V_OUT1 = 5V
T_A = 25°C, I_OUT1 = 500mA, V_IN = 3.6V,
V_OUT1 = 5V
V_OUT1 = 5V, T_A = 25°C
R_SET = 16.9kΩ
R_SET = 40kΩ
V_OUT1 = 5V
V_OUT1 = 5V, R_L = 10Ω
V_OUT1 = 5V, R_L = 10Ω
I_SINK = 1mA
V_FAULT = 5V
Rising and Falling Edge
V_EN = 5V, V_IN = 5V
Min
2.7
0.591
-3
1.4
-1
Typ
100
45
Max
5.0
5.5
2.7
90
1.0
Units
V
V
V
µA
µA
2.5
0.6
0.005
0.2
200
170
170
300
90
500
0.609
3
mA
A
V
%
%/mA
%/V
mΩ
mΩ
mΩ
µs
%
2.0
MHz
0.2
Ω
500 625
mA
100
mA
0.4
µs
4
ms
10
µs
0.4
V
0.5
1
µA
4
ms
0.4
V
V
1
µA
140
°C
15
°C
1. The AAT1275 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
4
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1275.2008.04.1.7