SC418 datasheet(3/30 Pages) SEMTECH

3 / 30 page

SC418

Absolute Maximum Ratings(1)

LX to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30

LX to PGND (V) (transient — 100ns) . . . . . . . . . . . -2 to +30

DH, BST to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +35

DH, BST to LX (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6

DL to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6

VIN to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30

EN, FB, FBL, ILIM to AGND (V) . . . . . . . -0.3 to +(VDDA + 0.3)

PGOOD, PSV, 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) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3to+0.3

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

Recommended Operating Conditions

Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 to 28

VDDA to AGND, VDDP to PGND (V) . . . . . . . . . . . 4.5 to 5.5

Power-save/Ultrasonic Power-save supported

VDDA to AGND, VDDP to PGND(2) (V) . . . . . . . . . . 3.0 to 4.5

Power-save/Ultrasonic Power-save not supported

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). . . . . 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.

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

VIN UVLO Threshold(1)

Sensed at ENL pin, rising edge

2.40

2.60

2.95

Sensed at ENL pin, falling edge

2.235

2.40

2.565

VIN UVLO Hysteresis

Sensed at ENL pin; EN = 5V

0.2

VDDA UVLO Threshold

Measured at VDDA pin, rising edge

2.50

2.90

3.05

Measured at VDDA pin, falling edge

2.40

2.70

2.90

VDDA UVLO Hysteresis

0.2

VIN Supply Current

Shutdown mode; ENL , EN = 0V

8.5

20.0

μA

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

EN = 0V, ignore LDO FB resistor bias current

130

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