SC508 datasheet(3/32 Pages) SEMTECH

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SC508/SC508A

Absolute Maximum Ratings(1)

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

Recommended Operating Conditions

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.

Unless specified: V

IN =12V, VDDA = VDDP = 5V, TA = +25°C for Typ, -40 to +85 °C for Min and Max, TJ < 125°C, Typical Application Circuit

Electrical Characteristics

Parameter

Conditions

Min

Typ

Max

Units

Input Supplies

Input Supply Voltage (V

IN)

VDDA = 5V

4.5

IN UVLO Threshold

(1)

Sensed at ENL pin, rising edge

1.50

1.56

1.70

Sensed at ENL pin, falling edge

1.45

1.52

1.65

IN UVLO Hysteresis

Sensed at ENL pin; EN = 5V

0.04

VDDA UVLO Threshold

Measured at VDDA pin, rising edge

3.7

3.9

4.1

Measured at VDDA pin, falling edge

3.5

3.7

3.9

VDDA UVLO Hysteresis

0.2

IN Supply Current

Shutdown mode; ENL, EN = 0V, V

IN = 46V

μA

Standby mode; VDDA, VDDP, ENL = 5V, EN = 0V

130

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