SC122 Ver la hoja de datos (PDF) - Semtech Corporation
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SC122 Datasheet PDF : 13 Pages
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SC122
Absolute Maximum Ratings
IN, OUT, LX (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0
EN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V + 0.3)
IN
ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Recommended Operating Conditions
Ambient Temperature Range (°C). . . . . . . . . . . . . . 0 to +70
V (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 to 1.6
IN
V (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3
OUT
Thermal Information
Thermal Resistance Junction-Ambient(2) (°C/W) . . . . . . . 84
Maximum Junction Temperature (°C) . . . . . . . . . . . . . . . 150
Storage Temperature Range (°C) . . . . . . . . . . . -65 to +150
Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . +260
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not recommended.
NOTES:
(1) Tested according to JEDEC standard JESD22-A114.
(2) Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Electrical Characteristics
Unless otherwise noted V = 1.2V, C = C = 22μF, L = 4.7μH, T = 0 to +70°C. Typical values are at T = 25°C.
IN
IN
OUT
1
A
A
Parameter
Symbol
Conditions
Min Typ Max Units
Input Voltage Range
Output Voltage
Output Accuracy
Minimum Startup Voltage
Operating Supply Current (1)
Disabled OUT Leakage Current
Disabled IN Quiescent Current
Shutdown Current
Internal Oscillator Frequency
Startup Time
Minimum V for Restart (2)
IN
P-Channel ON Resistance
N-Channel ON Resistance
P-Channel Startup Current Limit
V
IN
V
OUT
V
OUT-tol
V
IN-SU
I
OUT-Q
I
OUT-DIS
I
IN-DIS
I
IN-SHDN
f
OSC
t
SU
V
IN-Restart
R
DS(ON)P
R
DS(ON)N
I
LIM(P)-SU
V =V
EN IN
I < 1mA
OUT
V = V , I = 0mA, V = 3.3V
EN
IN OUT
OUT
V = 0, V = 3.3V (externally forced)
EN
OUT
V = 0, V = 1.6, V = 3.3V (externally forced)
EN
IN
OUT
V = 0V, V = 1.6V, V = 0V
EN
IN
OUT
while bursting
From V low-to-high transition
EN
Lowest V to ensure re-enable within 300μs,
IN
V = 3.1V (externally forced)
OUT
I = 50mA
LX
I = 50mA, V =1.6V
LX
IN
V = 1.2V, V > V
IN
EN
IH
0.7
1.6
3.3
-3
3
0.85
40
2
4
8.5
1.2
1
1.0
0.6
0.5
100
V
V
%
V
μA
μA
μA
μA
MHz
ms
V
Ω
Ω
mA
3
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