TC1267VET datasheet(2/14 Pages) MICROCHIP

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TC1267

DS21378B-page 2

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Input Supply Voltage (VIN)..............-0.5V to +7V (Max)

Auxiliary Supply Voltage (VAUX) .....-0.5V to +7V (Max)

LDO Output Current (IOUT)................................400mA

Thermal Impedance,

Junction-to-Ambient (

θJA).......... 27°C/W for DDPAK

ESD Rating .......................................................... 2 KV

Operating Temperature Range (TA)........-5°C to +70°C

Storage Temperature Range (TSTG) ...-65°C to +150°C

*Stresses above those listed under "Absolute Maximum

Ratings" may cause permanent damage to the device. These

are stress ratings only and functional operation of the device

at these or any other conditions above those indicated in the

operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TC1267 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: TA = +25°C, VIN =5V, VAUX =3.3V, IOUT =0.1mA,COUT =4.7µF, unless otherwise noted. Boldface

type specifications apply over full operating range.

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

VIN

Supply Voltage

4.4

5.0

5.5

VVAUX =0V

IGND

Ground Current

—

230

260

450

500

µAVAUX =0V (Note 6)

VAUX =3.3V (Note 6)

IVIN

Reverse Leakage from

VAUX

—-0.1

-1.0

µAV

AUX =3.5V, VIN =0V, IOUT =0mA

VAUX

Supply Voltage

3.0

3.3

3.6

IQ(AUX)

Quiescent Current

—

100

µAVIN =0V, IOUT =0mA

—

120

µAVIN =5V, IOUT =0mA

IVAUX

Reverse Leakage from VIN

—-0.1

-1.0

µAV

IN =5.5V, VAUX =0V, IOUT =0mA

VTH(LO)

5V Detector

Low Threshold Voltage

—

3.75

3.90

—

4.05

VVIN Falling (Notes 2, 3)

VHYST

5V Detector

Hysteresis Voltage

—

200

260

—

300

(Notes 2, 3)

VTH(HI)

5V Detector

High Threshold Voltage

—

4.0

4.15

—

4.30

VVIN Rising (Notes 2, 3)

VOUT

LDO Output Voltage

—

3.300

—

IOUT =20mA

3.201

—

3.366

V4.4V

≤ V

IN ≤ 5.5V, 0mA ≤ IOUT ≤ 400mA

3.000

——

0mA

≤ I

OUT ≤ 400mA (Note 4)

IOUT

Output Current

400

—

REG(LINE)

Line Regulation

—

-0.5

0.05

—

+0.5

%VIN = 4.3V to 5.5V

REG(LOAD)

Load Regulation

—

-1.5

-0.1

—

+0.5

%IOUT = 0.1mA to 400mA

VDR

Drive Voltage

VIN -0.2

VIN -0.3

VIN -0.1

—

V4.3V

≤ VIN ≤ 5.5V, IDR =200µA

—

150

200

VIN <VTH(LO),IDR =200µA

Note

Ensured by design.

See 5V Detect Thresholds, Figure 4-1.

Recommended source impedance for 5V supply:

≤ 0.25Ω. This will ensure that IOUT xRSOURCE <VHYST, thus avoiding DR toggling during

5V detect threshold transitions.

In Application Circuit, Figure 3-1.

See Timing Diagram, Figure 4-2.

Ground Current is independent of ILOAD.

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