AAT4674_12 Datasheet, PDF (4/12 Pages) Skyworks Solutions Inc. – Power Supply Selector Switch

DATA SHEET
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 Current²
I_{IN1_SHDN} IN1 Shutdown Mode Current
I_{IN1_SLP} IN1 Sleep Current
I_{IN2_OP} IN2 Normal Operating Current²
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, T_A = 25°C
V_IN1 = 3.5V, T_A = 25°C
V_IN2 = 5.0V, T_A = 25°C
V_IN2 = 3.5V, T_A = 25°C
I_O(OUT) = 0.5A, C_O(OUT) = 10μF
Delay of start from EN, or UVLO
R_IIN1/IIN2 = 100k
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


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.
2. Additional operating current is required by the RIINx current limit setting resistors. The amount of current required by the RIINx resistors is the current limit divided by 1000.
Therefore IINx_OP = (0.5V/RIINx)*(200k/1000) or approximately ILIM/1000.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
4
201911A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 26, 2012