SC2446AEVB View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC2446AEVB

Dual-Phase, Single or Dual Output Synchronous Step-Down Controller

Semtech Corporation 

SC2446A

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

reliability.

Parameter

Symbol

Maximum Ratings Units

Supply Voltage

AVCC

-0.3 to 16

V

Gate Outputs GDH1, GDH2, GDL1, GDL2 voltages

VGDH1, VGDH2,VGDL1, VGDL2

-0.3 to 6

V

IN1-, IN2- Voltages

REFOUT Voltages

REF, REFIN Voltage

COMP1, COMP2 Voltages

CS1+, CS1-, CS2+ and CS2- Voltages

SYNC Voltage

SS1/EN1 AND SS2/EN2 Voltages

Ambient Temperature Range

Thermal Resistance Junction to Case (TSSOP-28)

Thermal Resistance Junction to Ambient (TSSOP-28)

Storage Temperature Range

Lead Temperature (Soldering) 10 sec

Maximum Junction Temperature

VIN1-,VIN2-

VREF ,VREFOUT

VREFIN

V V COMP1, COMP2

V V V V CS1+, CS1-, CS2+, CS2-

VSYNC

VSS1,VSS2

TA

θJC

θJA

TSTG

TLEAD

TJ

-0.3 to AVCC+0.3

-0.3 to 6

-0.3 to AVCC+0.3

-0.3 to AVCC+0.3

-0.3 to AVCC+0.3

-0.3 to AVCC+0.3

-0.3 to 6

-40 to 125

13

84

-60 to 150

260

150

V

V

V

V

V

V

V

°C

°C/W

°C/W

°C

°C

°C

Electrical Characteristics

Unless specified: AVCC = 12V, SYNC = 0, ROSC = 51.1kΩ, -40°C < TA = TJ < 125°C

Parameter

Symbol

Conditions

Min

Typ

Max Units

Undervoltage Lockout

AVCC Start Threshold

AVCC Start Hysteresis

AVCC Operating Current

AVCC Quiescent Current in UVLO

Channel 1 Error Amplifier

Input Common-Mode Voltage Range

Inverting Input Voltage Range

AVCCTH AVCC Increasing

AVCCHYST

ICC

AVCC= 12V

AVCC = AVCCTH - 0.2V

(Note 1)

(Note 1)

4.5

4.7

V

0.2

V

8

15

mA

2.5

mA

0

3

V

0

AVCC

V

Input Offset Voltage

Non-Inverting Input Bias Current

Inverting Input Bias Current

Amplifier Transconductance

Amplifier Open-Loop Gain

Amplifier Unity Gain Bandwidth

IREF

IIN1-

GM1

aOL1

0 ~ 70° C

1

-100

-100

260

65

5

±3

-250

-250

mV

nA

nA

µΩ−1

dΒ

MHz

Minimum COMP1 Switching Threshold

VVCSSS11+In=crVeCaSs1-in=g0

2.2

V

 2005 Semtech Corp.

2

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