AAT4674 Datasheet, PDF (4/13 Pages) Advanced Analogic Technologies – Power Supply Selector Switch

AAT4674
Power Supply Selector Switch
Electrical Characteristics¹
V_INX = 5V, T_A = -40 to +85°C, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol
Operation
V_IN1
V_IN2
V_{UVLO_IN1}
Description
IN1 Operating Voltage Range
IN2 Operating Voltage Range
IN1 Under-Voltage Lockout
V_{UVLO_IN2} IN2 Under-Voltage Lockout
I_{IN1_OP}
IN1 Normal Operating Current
I_{IN1_SHDN}
IN1 Shutdown Mode Current
I_{IN1_SLP}
IN1 Sleep Current
I_{IN2_OP}
IN2 Normal Operating Current
I_{IN2_SHDN}
IN2 Shutdown Mode Current
I_{IN2_SLP}
IN2 Sleep Current
Power Switches
R_{DS(ON) IN1} IN1-to-OUT FET On-Resistance
R_{DS(ON) IN2} IN2-to-OUT FET On-Resistance
OUT Voltage Droop From the
Lower Voltage of IN1 and IN2,
V_{DROOP_OUT When Switching Over Between}
IN1 and IN2
Current Regulation
t_{SOFT_START} Soft-Start Delay
I_{LIM_range}
IN1/IN2 Current Limit Range
I_{LIM_ACC}
IN1/IN2 Current Limit Accuracy
Logic Control / Protection
V_IH(EN)
V_IL(EN)
T_SHDN
Logic High Threshold
Logic Low Threshold
Chip Thermal Shutdown
Temperature
Conditions
Rising edge
Hysteresis
Rising edge
Hysteresis
V_IN1 = 5V, V_EN = 0V
V_IN1 = V_EN = 5V, OUT open
V_IN1 = 2.5V, V_IN2 = 5V, V_EN =0V
V_IN2 = 5V, V_EN = 0V
V_IN2 = V_EN = 5V, OUT open
V_IN1 = 5V, V_IN2 = 2.5V, V_EN = 0V
V_IN1 = 5.0V
V_IN1 = 3.5V
V_IN2 = 5.0V
V_IN2 = 3.5V
I_O(OUT) = 0.5A, C_O(OUT) = 10µF
Delay of start from EN, or UVLO
R_IIN1/IIN2 = 100kΩ
Threshold
Hysteresis
Min Typ Max Units
2.5
6
V
2.5
6
V
2.3
V
0.1
2.3
V
0.1
10 30 µA
1
µA
1
5
µA
10 30 µA
1
µA
1
5
µA
0.12 0.15 _Ω
0.14 0.18
0.12 0.15 _Ω
0.14 0.18
150
mV
100
µs
0.2
2.0 A
0.8
1 1.2 A
1.6
V
0.4 V
140
15
°C
1. The AAT4674 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
4674.2007.09.1.0