TC1266_13 Datasheet, PDF(2/18 Page) Microchip Technology

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TC1266_13 Datasheet, PDF (2/18 Pages) Microchip Technology – 200mA PCI LDO

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TC1266

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)................................200mA

Thermal Impedance,

Junction-to-Ambient (ï±JA)............130Â°C/W for SOIC

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

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

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

TC1266 ELECTRICAL SPECIFICATIONS

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

type specifications apply over full operating temperature range.

Symbol

Parameter

Min

Typ

Max Units

Test Conditions

VIN

IGND

IVIN

VAUX

IQ(AUX)

Supply Voltage

Ground Current

Reverse Leakage from VAUX

Supply Voltage

Quiescent Current

4.3

5.0

5.5

VAUX = 0V

230

450

ïA VAUX = 0V (Note 6)

260

500

VAUX = 3.3V (Note 6)

-0.1

-1.0

ïA VAUX = 3.6V, VIN = 0V, IOUT = 0mA

3.0

3.3

3.6

ïA VIN = 0V, IOUT = 0mA

100

ïA VIN = 5V, IOUT= 0mA

120

IVAUX

VTH(LO)

Reverse Leakage from VIN

5V Detector

Low Threshold Voltage

-0.1

-1.0

3.90

3.75

4.05

ïA VIN = 5,5V, VAUX = 0V, IOUT = 0mA

V VIN Falling (Notes 2, 3)

VHYST

5V Detector

Hysteresis Voltage

260

mV (Notes 2, 3)

200

300

VTH(HI)

5V Detector

High Threshold Voltage

4.15

4.0

4.30

V VIN Rising (Notes 2, 3)

VOUT

LDO Output Voltage

IOUT

REG(LINE)

Output Current

Line Regulation

3.234

3.000

200

-0.5

3.300

0.05

3.366

0.5

V IOUT = 20mA

4.3V ï£ VIN ï£ï 5.5V, 0mA ï£ï IOUT ï£ 200mA

3.75V ï£ï VIN ï£ï ï´ï®ï³V,

0mA ï£ IOUTï ï£ï 200mA (Note 4)

% VIN = 4.3V to 5.5V

REG(LOAD) Load Regulation

0.05

-0.5

0.5

% IOUT= 0.1mA to 200mA

Note

1: Ensured by design.

2: See 5V Detect Thresholds, Figure 4-1.

3: Recommended source impedance for 5V supply: ï£ï 0.25ï. This will ensure that IOUT x RSOURCE < VHYST, thus avoiding DR toggling during

5V detect threshold transitions.

4: In Application Circuit, Figure 3-1.

5: See Timing Diagram, Figure 4-2.

6: Ground Current is independent of ILOAD.

DS21377C-page 2

ï£ 2001-2012 Microchip Technology Inc.

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