5

 2005 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC190

Pin Configuration

Ordering Information

TOP VIEW

1

2

3

4

10

9

8

7

5

6

MLP10: 3X3 10 LEAD

BP

VIN

VOUT

EN

MODE

LX

GND

VID1

VID0

SYNC/PWM

T

Device

Package

MLP 3X3-10

SC190AEVB

SC190BEVB

SC190CEVB

SC190DEVB

(1) Lead-free packaging only. This product is fully WEEE and RoHS

compliant. Available on tape and reel only. A reel contains 3000

devices.

(2) Part specific evaluation boards - consult factory for availability.

Programmable Output Voltage

VID1

VID0

SC190A

SC190B

SC190C

SC190D

0

0

1.8V

1.2V

2.5V

1.3V

0

1

1.85V

1.5V

2.8V

1.35V

1

0

1.75V

1.0V

2.6V

1.375V

1

1

1.9V

1.8V

2.7V

1.4V

Pin #

Pin Name

Pin Function

1

BP

Regulated output, with respect to VIN, of the front-end LDO. A decoupling capacitor is connected to

this pin. This input goes directly to the internal MOSFET switch.

2

VIN

Input power supply voltage

.

3

VOUT

Regulated output voltage and feedback for SC190.

4

EN

Enable (digital input): high input enables the SC190, a low disables and reduces quiescent current to

0.1µA. In shutdown, LX becomes high impedance.

5

MODE

Mode select pin (digital input): MODE = VIN - linear regulator mode; MODE = GND - switcher mode.

6

SYNC/PWM

Oscillator synchronization input. Tie to VIN for forced continuous mode or external clock for frequency

synchronization.

7

VID0

Logic level Bit 0 used in conjunction with VID1 to set the output voltage.

8

VID1

Logic level Bit 1 used in conjunction with VID0 to set the output voltage.

9

GND

Ground.

10

LX

Inductor connection to the switching FETs.

T

Thermal

Pad for heatsinking purposes. Not connected internally. Connects to ground plane using multiple

vias.

Pin Descriptions