AAT4674_08 Datasheet, PDF (4/12 Pages) Advanced Analogic Technologies – Power Supply Selector Switch

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PRODUCT DATASHEET
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 Description
Operation
V_IN1
IN1 Operating Voltage Range
V_IN2
IN2 Operating Voltage Range
V_{UVLO_IN1} 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
V_{DROOP_OUT}
OUT Voltage Droop From the Lower Voltage of IN1 and
IN2, 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)
Logic High Threshold
Logic Low Threshold
T_SHDN 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
2.5
2.5
0.1
0.1
10
1
10
1
0.12
0.14
0.12
0.14
150
100
0.2
0.8 1
1.6
140
15
Max
6
6
2.3
2.3
30
1
5
30
1
5
0.15
0.18
0.15
0.18
2.0
1.2
0.4
Units
V
V
V
V
μA
μA
μA
μA
μA
μA
Ω
Ω
mV
μs
A
A
V
V
°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 correla-
tion with statistical process controls.
4
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4674.2008.02.1.1