SC1458 Просмотр технического описания (PDF) - Semtech Corporation
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SC1458 Datasheet PDF : 13 Pages
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SC1458
Absolute Maximum Ratings
Recommended Operating Conditions
V (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.5
IN
V (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V + 0.3)
EN
IN
V (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V + 0.3)
PGOOD
IN
Pin Voltage — All Other Pins (V) . . . . . . . . . -0.3 to (V + 0.3)
IN
V , V , Short Circuit Duration . . . . . . . . . .Continuous
OUTA OUTB
ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ambient Temperature Range (°C) . . . . . . . . -40 < T < +85
A
VIN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 < V < 5.5
IN
Thermal Information
Thermal Resistance, Junction to Ambient(2) (°C/W) . . . . 50
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-B.
(2) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Electrical Characteristics
Unless otherwise noted V = 3.6V, C = 2.2μF, C = C = 1μF, V = V , T = -40 to +85°C. Typical values are at T = 25°C. All specifications
IN
IN
OUTA
OUTB
EN
IN A
A
apply to both LDOs unless otherwise noted.
Parameter
Symbol
Conditions
Min Typ Max Units
Input Supply Voltage Range
Output Voltage Accuracy
Maximum Output Current
Dropout Voltage(1)
Shutdown Current
Quiescent Current
V
IN
ΔV
OUT
I
MAX
V
D
I
SD
I
Q
V = V + 0.3V to 5.5V, I = 0 to 300mA
IN
OUT
OUT
I = 200mA, V = 2.5V
OUT
OUT
T = 25°C
A
I = I = 0mA, T = 25°C
OUTA OUTB
A
2.5
5.5
V
-3
3
%
300
mA
100 200
mV
0.1
1
μA
100
μA
Load Regulation
V
LOAD
I = 1mA to I
OUT
MAX
20
mV
Line Regulation
Current Limit
Noise(2)
V
I = 1mA
-6
6
mV
LINE
OUT
I
350
850
mA
LIM
V = 3.7V, I = 50mA , 10Hz < f < 100kHz,
IN
OUT
e
C = 22nF
BYP
N
V = 3.7V, I = 50mA , 10Hz < f < 100kHz
IN
OUT
50
μV
RMS
300
μV
RMS
3
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