SC508 데이터 시트보기 (PDF) - Semtech Corporation
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SC508 Datasheet PDF : 32 Pages
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SC508/SC508A
Absolute Maximum Ratings(1)
Recommended Operating Conditions
LX to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +50
LX to PGND (V) (transient — 100ns) . . . . . . . . . . -2 to +50
DH, BST to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +55
DH, BST to LX (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6
DL to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6
VIN to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +50
EN, FB, ILIM, PGOOD to AGND (V). . . . -0.3 to +(VDDA + 0.3)
PSV, SS, TON to AGND (V). . . . . . . . . . . -0.3 to +(VDDA + 0.3)
VLDO, VOUT to AGND (V). . . . . . . . . . . -0.3 to +(VDDA + 0.3)
TON to AGND (V). . . . . . . . . . . . . . . . . . . -0.3 to +(VDDA -1.5)
ENL to AGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VIN
VDDP to PGND, VDDA to AGND (V) . . . . . . . . . . . 0.3 to +6
VDDA to VDDP (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +0.3
AGND to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +0.3
ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 to 46
VDDA to AGND, VDDP to PGND (V). . . . . . . . . . . . 4.5 to 5.5
VOUT to PGND (V)(2). . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 to 5.5
Supports output voltages greater than 5.5V using
external components
Thermal Information
Storage Temperature (°C). . . . . . . . . . . . . . . . . . . . . -60 to +150
Maximum Junction Temperature (°C). . . . . . . . . . . . . . . . 150
Operating Junction Temperature (°C). . . . . . . . . -40 to +125
Thermal resistance, junction to ambient(3) (°C/W). . . . . . . 50
Peak IR Reflow Temperature (°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) VOUT pin must not exceed (VDDA pin + 0.3V).
(3) 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 specified: VIN =12V, VDDA = VDDP = 5V, TA = +25°C for Typ, -40 to +85 °C for Min and Max, TJ < 125°C, Typical Application Circuit
Parameter
Conditions
Min Typ Max Units
Input Supplies
Input Supply Voltage (VIN)
VIN UVLO Threshold(1)
VDDA = 5V
Sensed at ENL pin, rising edge
Sensed at ENL pin, falling edge
4.5
46
V
1.50 1.56 1.70
V
1.45 1.52 1.65
VIN UVLO Hysteresis
VDDA UVLO Threshold
Sensed at ENL pin; EN = 5V
Measured at VDDA pin, rising edge
Measured at VDDA pin, falling edge
0.04
V
3.7
3.9
4.1
V
3.5
3.7
3.9
VDDA UVLO Hysteresis
0.2
V
VIN Supply Current
Shutdown mode; ENL, EN = 0V, VIN = 46V
Standby mode; VDDA, VDDP, ENL = 5V, EN = 0V
20
35
μA
130
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