RT9171-33 Ver la hoja de datos (PDF) - Richtek Technology

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componentes Descripción

Lista de partido

RT9171-33

2A Fixed and Adjustable Low Dropout Positive Voltage Regulators

Richtek Technology 

RT9171

Pin Description

Pin Name Pin Function

ADJ / GND Adjust Output or Ground

VOUT

Output Voltage

VIN

Power Input

Absolute Maximum Ratings

z Input Voltage

z Operating Junction Temperature Range

z Storage Temperature Range

z Lead Temperature (Soldering, 10 sec.)

z Package Thermal Resistance

TO-252, θJC

TO-252, θJA

TO-263, θJC

TO-263, θJA

9V

−40°C to 125°C

−65°C to 150°C

260°C

15°C/W

56°C/W

8°C/W

19.4°C/W

Electrical Characteristics

(TA = 25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Units

Reference Voltage (1) RT9171

VREF

Output Voltage

RT9171-25

RT9171-33 VOUT

IOUT = 10mA, (VIN - VOUT) = 2V

TA = 25°C

10mA < IOUT < 2A,

1.6V < VIN - VOUT < 9V

VIN = VOUT +2V, IOUT = 10mA

1.238 1.250 1.262

V

1.225 1.250 1.270

2.475 2.5 2.525

V

3.267 3.3 3.333

Line Regulation (1)

Load Regulation (1)

Dropout Voltage (2)

Current Limit

Minimum Load Current RT9171

∆VLINE

∆VLOAD

VDROP

ILIMIT

IOUT = 10mA

1.6V ≤ VIN - VOUT to VIN = 9V

(VIN − VOUT) = 2V, 0mA ≤ IOUT ≤ 2A

IOUT = 100mA

IOUT = 2A

VIN = 5V

(VIN - VOUT) = 2V

Ripple Rejection

Adjust Pin Current

Adjust Pin Current Change

PSRR

IADJ

∆IADJ

fRIPPLE = 120HZ , (VIN - VOUT) = 2V,

VRIPPLE = 1VP-P

10mA ≤ IOUT ≤ 1A, VIN = 5V

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

(2) ΔVOUT and ΔVREF = 1%.

-- 0.1 0.3 %

-- 0.2 0.4 %

-- 1.1 1.2

V

-- 1.4 1.6

2.2 3 -- A

-- 5 10 mA

-- 72 -- dB

-- 65 120 µA

-- 0.2 5 µA

www.richtek-ic.com.tw

2

DS9171-02 May 2001

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