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SC2542EVB

High Performance Wide Input Range Dual Synchronous Buck Controller

Semtech Corporation 

SC2542

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified

in the Electrical Characteristics section is not implied.

Parameter

Symbol

Maximum

Units

BST1, BST2 to PGND

VIN to PGND

ILIM1 and ILIM2 to PGND

VCC and PVCC to PGND

PGND to AGND

BST1 to PH1, BST2 to PH2,

DRVH1 to PH1, DRVH2 to PH2

DRVL1, DRVL2 to PGND

EN to PGND

All other pins to AGND

Operating Junction Temperature Range

Storage Temperature Range

Thermal Resistance, Junction to Case

Thermal Resistance, Junction to Ambient

Lead Temperature (Soldering) 10 Sec.

PHASE to AGND pulse (100nS) peak voltage

VBST

VIN

TJ

TSTG

θJC

θJA

T

SOLDER

38

28

VIN

14

± 0.3

-0.3 to 14

-0.3 to VCC

-0.3 to VIN

-0.3 to VCC

-40 to +150

-60 to +150

3

35

260

-3

V

V

V

V

V

V

V

V

V

°C

°C

° C/W

° C/W

°C

V

DRVL to AGND pulse (100nS) peak voltage

-3

V

Note: (1) This device is ESD sensitive. Use of standard ESD handling precautions is required.

Electrical Characteristics

Unless specified: TA = 25°C, VIN = 16V, FS = 200KHz.

Parameter

Test Conditions

Min

Typ

Max

Unit

Undervoltage Lockout

Start Threshold

VCC rising

5.25

5.5

5.75

V

UVLO Hysteresis

hysteresis

400

mV

Power Supply

Operating Current (IIN - IPVCC)

PVCC Operating Current

VCC Regulated

VCC Load Regulation

SS1/SS2, EN = high, FS = 200 KHz

FS = 200KHz, 1nF on TG and BG

VIN > 12V

Load current 0 to 20mA

7

12

mA

14

mA

10

V

2

%

Standby Supply Current

STBY mode

200

350

µA

Shutdown Supply Current

© 2005 Semtech Corp.

Shutdown mode

2

0.1

10

µA

www.semtech.com

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