SC417 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC417 Datasheet PDF : 29 Pages
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SC417/SC427
Absolute Maximum Ratings(1)
Recommended Operating Conditions
LX to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30
LX to PGND (V) (transient — 100ns) . . . . . . . . . . . -2 to +30
VIN to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30
EN/PSV, PGOOD, ILIM, to GND (V) . . . . . . -0.3to+(V5V+0.3)
VOUT, VLDO, FB, FBL, to GND (V). . . . . . . -0.3to+(V5V+0.3)
V5V to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6
TON to PGND (V). . . . . . . . . . . . . . . . . . . . . -0.3 to +(V5V - 1.5)
ENL (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to V
IN
BST to LX (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0
BST to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +35
AGND to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +0.3
Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 to 28
V5V to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 to 5.5
VOUT to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 to 5.5
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 (2) (°C/W)
High-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Low-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
PWM controller and LDO thermal resistance . . . . . 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) This device is ESD sensitive. Use of standard ESD handling precautions is required.
(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 specified: V =12V, T = +25°C for Typ, -40 to +85 °C for Min and Max, T < 125°C, V5V = +5V, Typical Application Circuit
IN
A
J
Parameter
Conditions
Min Typ Max Units
Input Supplies
Input Supply Voltage
3
28
V
V5V Voltage
4.5
5.5
V
VIN UVLO Threshold(1)
Sensed at ENL pin, rising edge
Sensed at ENL pin, falling edge
2.40 2.60 2.95
V
2.235 2.40 2.565
VIN UVLO Hysteresis
EN/PSV = High
0.2
V
V5V UVLO Threshold
Measured at V5V pin, rising edge
Measured at V5V pin, falling edge
3.7
3.9
4.1
V
3.5
3.6 3.75
V5V UVLO Hysteresis
0.3
V
VIN Supply Current
ENL , EN/PSV = 0V, V = 28V
IN
Standby mode; ENL=V5V, EN/PSV = 0V
8.5
20
μA
130
4
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