SC414/SC424
Absolute Maximum Ratings
Recommended Operating Conditions
LX to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30
LX to PGND (V) (transient — 100ns max.) . . . . . . -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, 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 VIN
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
ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 to 28
V5V to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 to 5.5
VOUT to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . 0.75 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Low-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
PWM controller and LDO thermal resistance . . . . . 40
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) 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, TA = +25°C for Typical, -40 to +85 °C for Min. and Max., TJ < 125°C, V5V = +5V, Typical Application Circuit
Parameter
Conditions
Min
Typ
Max Units
Input Supplies
Sensed at ENL pin, rising edge
Sensed at ENL pin, falling edge
EN/PSV = High
2.40
2.60
2.40
0.2
2.95
V
2.565
VIN UVLO Threshold(1)
(not available for V5V < 4.5V)
2.235
VIN UVLO Hysteresis
V5V UVLO Threshold
V5V UVLO Hysteresis
VIN Supply Current
V
Measured at V5V pin, rising edge
Measured at V5V pin, falling edge
2.50
2.40
2.9
3.0
V
2.7
2.90
0.2
V
ENL, EN/PSV = 0V, VIN = 28V
8.5
20
μA
Standby mode; ENL=V5V, EN/PSV = 0V
130
4
SEMTECH [ SEMTECH CORPORATION ]
