MCP1824ST-3002E/DB【PDF 7/34 页】IC REG LDO 3V .3A SOT223-3

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MCP1824/MCP1824S

1.0

ELECTRICAL

CHARACTERISTICS

? Notice: Stresses above those listed under “Maximum Rat-

ings” may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

Absolute Maximum Ratings ?

Input Voltage, V IN .............................................................6.5V

operational listings of this specification is not implied. Expo-

sure to maximum rating conditions for extended periods may

affect device reliability.

Maximum Voltage on Any Pin ... (GND – 0.3V) to (V IN + 0.3)V

Maximum Power Dissipation......... Internally-Limited ( Note 6 )

Output Short Circuit Duration ................................ Continuous

Storage temperature .....................................-65°C to +150°C

Maximum Junction Temperature, T J ........................... +150°C

Operating Junction Temperature, T J .............-40°C to +125°C

EESD protection on all pins ........... ≥ 4 kV HBM; ≥ 300V MM

AC/DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, V IN = V OUT(MAX) + V DROPOUT(MAX) , Note 1 , V R = 1.8V for Adjustable Output,

I OUT = 1 mA, C IN = C OUT = 4.7 μF (X7R Ceramic), T A = +25°C.

Boldface type applies for junction temperatures, T J ( Note 7 ) of -40°C to +125°C

Parameters

Input Operating Voltage

Output Voltage Range

Input Quiescent Current

Sym

V IN

V OUT

I q

Min

2.1

0.8

—

Typ

—

—

120

Max

6.0

5.0

220

Units

V

V

μA

Conditions

I L = 0 mA, V OUT = 0.8V to

5.0V

Input Quiescent Current for

I SHDN

—

0.1

3

μA

SHDN = GND

SHDN Mode

Maximum Continuous Output

I OUT

300

—

—

mA

V IN = 2.1V to 6.0V

Current

V R = 0.8V to 5.0V

Line Regulation

Load Regulation

Δ V OUT /

(V OUT x Δ V IN )

Δ V OUT /V OUT

—

-1.0

±0.05

±0.5

±0. 17

1.0

%/V

%

(Note 1) ≤ V IN ≤ 6V

I OUT = 1 mA to 300 mA,

Output Short Circuit Current

Dropout Voltage

I OUT_SC

V DROPOUT

—

—

720

200

—

320

mA

mV

R LOAD < 0.1 Ω , Peak Current

Note 5 , I OUT = 300 mA,

V IN(MIN) = 2.1V

Pulsed Applications

Maximum Pulsed Output

I PULSE

—

500

—

mA

V IN = 2.1V to 6.0V

Current

Note 1:

2:

3:

4:

5:

6:

7:

V R = 0.8V to 5.0V,

Duty Cycle ≤ 60%,

Period < 10 ms

The minimum V IN must meet two conditions: V IN ≥ 2.1V and V IN ≥ V OUT(MAX) + V DROPOUT(MAX).

V R is the nominal regulator output voltage for the fixed cases. V R = 1.2V, 1.8V, etc. V R is the desired set point output

voltage for the adjustable cases. V R = V ADJ * ((R 1 /R 2 )+1). Figure 4-1 .

TCV OUT = (V OUT-HIGH – V OUT-LOW ) *10 6 / (V R * Δ Temperature). V OUT-HIGH is the highest voltage measured over the

temperature range. V OUT-LOW is the lowest voltage measured over the temperature range.

Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is

tested over a load range from 1 mA to the maximum specified output current.

Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its

nominal value that was measured with an input voltage of V IN = V OUT(MAX) + V DROPOUT(MAX) .

The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction

temperature and the thermal resistance from junction to air. (i.e., T A , T J , θ JA ). Exceeding the maximum allowable power

dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained

junction temperatures above 150°C can impact device reliability.

The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the

desired junction temperature. The test time is small enough such that the rise in the junction temperature over the

ambient temperature is not significant.

2007 Microchip Technology Inc.

DS22070A-page 7

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