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SC1480A

DDR and DDR Memory VTT power Supply Controller

Semtech Corporation 

SC1480A

POWER MANAGEMENT

Absolute Maximum Ratings(3)

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. Exposure to Absolute Maximum rated conditions for extended periods of time may

affect device reliability.

Pin Combination

Symbol

Maximum

Units

TON to VSSA

-0.3 to +25.0

V

DH, BST to PGND

-0.3 to +30.0

V

LX to PGND

-2.0 to +25.0

V

VSSA to PGND

-0.3 to +0.3

V

BST to LX

-0.3 to +6.0

V

DL, ILIM, VDDP to PGND

-0.3 to +6.0

V

FB, PGD, REFIN, REFOUT, VCCA to VSSA

-0.3 to +6.0

V

VCCA to FB, PGD, REFIN, REFOUT

-0.3 to +6.0

V

Thermal Resistance, Junction to Ambient(4)

θJA

Operating Junction Temperature Range

TJ

Storage Temperature Range

TSTG

Lead Temperature (Soldering) 10 Sec.

TLEAD

Electrical Characteristics

Test Conditions: VBAT = 2.5V, REFIN = 1.25, VCCA = VDDP = 5.0V, VOUT = 1.25V, RTON = 1MΩ

100

-40 to +125

-65 to +150

300

°C/W

°C

°C

°C

Parameter

Conditions

25°C

-40°C to 125°C Units

Min Typ Max Min

Max

Input Supplies

VCCA Input Voltage

VDDP Input Voltage

5.0

4.5

5.5

V

5.0

4.5

5.5

V

VBAT Input Voltage

25

V

VDDP Operating Current FB > regulation point, ILOAD = 0A

75

VCCA Operating Current FB > regulation point, ILOAD = 0A

700

VCCA Standby Current

VDDP < VDDP UV Threshold

125

No Load On REFOUT

TON Operating Current

RTON = 1MΩ, VBAT = 25V

24

REFIN Bias Current

REFIN = 1.25V

160

µA

1100 µA

µA

µA

1

µA

Shutdown Current

REFIN

0

1

µA

(REFIN = 0V)

VCCA

5

10

µA

VDDP

TON, VBAT = 25V

5

10

µA

0

1

µA

 2003 Semtech Corp.

2

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