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MCP1702

250 mA Low Quiescent Current LDO Regulator

Microchip Technology 

MCP1702

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise specified, all limits are established for VIN = VOUT(MAX) + VDROPOUT(MAX), Note 1,

ILOAD = 100 µA, COUT = 1 µF (X7R), CIN = 1 µF (X7R), TA = +25°C.

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

Parameters

Sym

Min

Typ

Max

Units

Conditions

Dropout Voltage

(Note 1, Note 5)

VDROPOUT

—

—

—

—

—

330

650

525

725

625

975

750

1100

—

—

mV

IL = 250 mA, VR = 5.0V

mV

IL = 250 mA, 3.3V  VR < 5.0V

mV

IL = 250 mA, 2.8V  VR < 3.3V

mV

IL = 250 mA, 2.5V  VR < 2.8V

mV

VR < 2.5V, See Maximum Output

Current Parameter

Output Delay Time

Output Noise

TDELAY

eN

—

1000

—

µs

VIN = 0V to 6V, VOUT = 90% VR

RL = 50 resistive

—

8

—

µV/(Hz)1/2 IL = 50 mA, f = 1 kHz, COUT = 1 µF

Power Supply Ripple

Rejection Ratio

PSRR

—

44

—

dB

f = 100 Hz, COUT = 1 µF, IL = 50 mA,

VINAC = 100 mV pk-pk, CIN = 0 µF,

VR = 1.2V

Thermal Shutdown

Protection

TSD

—

150

—

°C

Note 1:

2:

3:

4:

The minimum VIN must meet two conditions: VIN2.7V and VIN VOUT(MAX) + VDROPOUT(MAX).

VR is the nominal regulator output voltage. For example: VR = 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V, or 5.0V. The

input voltage VIN = VOUT(MAX) + VDROPOUT(MAX) or VIN = 2.7V (whichever is greater); IOUT = 100 µA.

TCVOUT = (VOUT-HIGH - VOUT-LOW) *106 / (VR * Temperature), VOUT-HIGH = highest voltage measured over the

temperature range. VOUT-LOW = lowest voltage measured over the temperature range.

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

voltage due to heating effects are determined using thermal regulation specification TCVOUT.

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

value with an applied input voltage of VOUT(MAX) + VDROPOUT(MAX) or 2.7V, whichever is greater.

6: 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., TA, TJ, 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 the device reliability.

7: 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.

DS22008E-page 4

 2010 Microchip Technology Inc.

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