SC1565 查看數據表（PDF） - Semtech Corporation

零件编号

产品描述 (功能)

生产厂家

SC1565

Very Low Dropout 1.5 Amp Regulator With Enable

Semtech Corporation 

SC1565

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: VEN

Fixed Options (VADJ =

= VIN. Adjustable

GND): VIN = (VO

Option

+ 0.7V)

(VADJ > VTH(ADJ)): VIN = 2.2V to

to 5.5V and IO = 0A to 1.5A.

5.5V and

Values in

bIOol=d1a0pµpAlytoov1e.r5Ath.e

full

operating

temperature

range.

Parameter

Symbol

Test Conditions

Min Typ Max

Units

VO (Cont.)

Dropout Voltage(1)(2)

IO = 1A

180 400 mV

500

Minimum Load Current(3)

IO

Current Limit

ICL

ADJ

IO = 1.5A

VIN = VO + 0.7V

270 500 mV

600

1

10

µA

1.6

2.0

3.5

A

Reference Voltage(1)

VREF

Adjust Pin Current(4)

Adjust Pin Threshold(5)

EN

IADJ

VTH(ADJ)

Enable Pin Current

IEN

Enable Pin Threshold

VIH

VIL

Over Temperature Protection

VIN = 2.2V, VADJ = VOUT, IO = 10mA

VADJ = VREF

VEN = 0V, VIN = 3.3V

VIN = 3.3V

VIN = 3.3V

1.188 1.200 1.212 V

1.176

1.224

30

200 nA

0.05 0.20 0.40

V

1.5

10

µA

1.6

V

0.4

High Trip level

THI

170

°C

Hysteresis

THYST

20

°C

Notes:

(1) Low duty cycle pulse testing with Kelvin connections required.

(2) Defined as the input to output differential at which the output voltage drops to 1% below the value

measured at a differential of 0.7V.

(3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this

requirement. Adjustable versions only.

(4) Guaranteed by design.

(5) When VADJ exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from

the error amplifier and connects VADJ instead.

 2005 Semtech Corp.

3

www.semtech.com

Share Link: