SC3203 datasheet(3/20 Pages) SEMTECH

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SC3203

Absolute Maximum Ratings

LX to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18

EN to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18

VIN to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18

BST to LX (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0

BST to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +23

BYP to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3to+6.0

PGOOD to AGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3to+6.0

VFB to AGND (V) . . . . . . . . . . . . . . . . . . . . . . . -0.3 to BYP +0.3

AGND to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 0.3

Maximum Peak Inductor Current (A) . . . . . . . . . . . . . . . . . 5.0

Peak IR Reflow Temperature (°C ). . . . . . . . . . . . . . . . . . . . . 260

BST to LX Capacitance (nF) . . . . . . . . . . . . . . . . . . . . . . . . . . ..15

ESD Protection Level (kV)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . 5kV

Recommended Operating Conditions

Supply Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . 9 to 16

Maximum Continuous Output Current (A). . . . . . . . . . . . 3.0

Maximum Peak Inductor Current (A) . . . . . . . . . . . . . . . 4.0

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 ). . . . .36

Thermal Resistance Junction to Case(2) (°C/W ). . . . . . . .5.5

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 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.

Electrical Characteristics

Unless specified: V

IN =12V, TA=+25°C for Typ, -40°C to +85°C for Min and Max, TJ < 125°C, per detailed application circuit

Parameter

Conditions

Min

Typ

Max

Units

Input Supply

VIN UVLO Threshold

VIN rising edge, EN = VIN

4.40

4.55

Hysteresis, EN = VIN

0.30

VIN Supply Current

EN = 0V

μA

No switching, I

OUT = 0A, VFB 5% higher than

the VFB On-time Threshold

0.35

Controller

VFB On-Time Threshold Accuracy

736

750

766

VFB Input Bias Current

0.2

μA

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