SC2604

3

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© 2007 Semtech Corp.

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-

() Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD5 standards.

(2) Tested according to JEDEC standard JESD22-A4-B.

Electrical Characteristics

Unless otherwise noted, V

Absolute Maximum Ratings

V

……………………………… -0.3 to 20V

CS Pin Voltage………………………………………-0.3 to 20V

GATE Pin Voltage……………………………………-0.3 to 20V

DRV Pin Voltage ……………………………………-0.3 to 25V

OCP/EN Pin Voltage …………………………………-0.3 to 7V

SS/VREF Pin Voltage …………………………………-0.3 to 7V

FB Pin Voltage ………………………………………-0.3 to 7V

Peak IR Reflow Temperature ………………………….

260°C

Thermal Information

Maximum Junction Temperature……………………… 50°C

Storage Temperature ………………………… -45 to +50°C

Lead Temperature (Soldering) 0 sec ………………… 300°C

Parameter

Conditions

Min

Typ

Max

Units

Input Supply

V

4.5

3.5

V

V

V

4.2

4.5

V

V

400

mV

V

Switching, GATE pin floating

6.0

9.0

mA

V

OCP/EN = Low

200

µA

Error Amplifier

Feedback Voltage

I

.225

.250

.275

V

Feedback Bias Current

V

0.5

.0

µA

90

V/V

Oscillator

Oscillator Frequency

320

400

480

kHz

Maximum Duty Cycle

86

90

%

.4

V

0.4

V

Regulation

Load Regulation

I

0.5

%

Line Regulation

V

.0

%

Recommended Operating Conditions

Input Voltage Range …………………………… 4.5V to 3.5V