SC2441ITSTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC2441ITSTRT

Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter

Semtech Corporation 

SC2441

POWER MANAGEMENT

Absolute Maximum Rating

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 Ratings

Units

Input Voltages

Supply Voltage For Step-Down Controller

High-Side Driver Supply Voltages

FB1, FB2 Voltage

COMP1, COMP2 Voltages

CS1(+), CS1(-), CS2(+) and CS2(-)

Voltages

VIN , VPVIN

VCC

VBST1, VBST2

VFB1, VFB2

VCOMP1, VCOMP2

V V , V , V CS1(+), CS1(-) CS2(+) CS2(-)

-0.3 to 20

V

-0.3 to 20

V

-0.3 to 20

V

-0.3 to 20

V

-0.3 to 4.5

V

-0.3 to 20

V

SYNC/SHDN Voltage

ROSC Voltage

SS1/EN1 AND SS2/EN2 Voltages

Peak Gate Drive Current

Peak VPN1 and VPN2 Output Currents

FB3 Voltage

COMP3 Voltage

PH3 Voltage

Ambient Temperature

Thermal Resistance Junction to Case

Thermal Resistance Junction to Ambient

Storage Temperature Range

Lead Temperature (Soldering) 10 sec

VS/S

VROSC

VSS1, VSS2

IGDH1, IGDH2, IGDL1, IGDL2

IVPN1, IVPN2

VFB3

VCOMP3

VPH3

TA

θJC

θJA

TSTG

TLEAD

-0.3 to 20

-0.3 to 5

-0.3 to 6

3

100

4

-0.3 to 2

-0.3 to 35

-40 to 85

13

84

-60 to 150

260

V

V

V

A

mA

V

V

V

°C

°C/W

°C/W

°C

°C

Electrical Characteristics

Unless specified: VIN = 2V, VCC = VBST1 = VBST1 =8V, SYNC/SHDN =2V, ROSC = 51.1kΩ, -40°C < TA = TJ < 85°C

Parameter

Symbol

Conditions

Min

Typ

Max Units

Undervoltage Lockout

VCC Start Threshold

VCC UVLO Threshold

VCC Operating Current

Channel 1 and 2 Error Amplifiers

VCCTH

VCCTL

ICC

VCC Increasing

VCC Decreasing

VVVCCCCCC<==V88CCVVT,,L,VVVSS//SSS/S===202VVV

4.65

4.72

V

4.34

4.45

V

14

21

mA

0.15

0.25

10

13

Feedback Voltage

Feedback Pin Input Bias Current

Amplifier Transconductance

Open Loop Voltage Gain

Amplifier Unity Gain Bandwidth

Amplifier Output Sink Current

Amplifier Output Source Current

COMP Threshold for PWM Operation

FB2 Voltage For 2-Phase Single Output

Operation

VFB1, VFB2

IFB1, IFB2

GM1, GM2

ao1, ao2

VCCTLV<INV=CC3<V 10V

-40°C < TA < 85°C

(Note 1)

VFB1, 2 = 1V, VCOMP1,2 = 2.5V

VFB1, 2 = 0V, VCOMP1,2 = 2.5V

VCS1(+)

VCS2(+)

=

=

VCS1(-)

VCS2(-)

=

=

0

0

-40°C < TA < 85°C

0.487

20

10

1.3

1.55

0.496

-160

400

75

5

32

17

1.7

0.507

-400

40

30

2.2

V

nA

µΩ−1

dB

MHz

µA

µA

V

V

 2005 Semtech Corp.

2

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