TC1267_13 Datasheet, PDF(3/14 Page) Microchip Technology

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TC1267_13 Datasheet, PDF (3/14 Pages) Microchip Technology – 400mA PCI LDO

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TC1267

TC1267 ELECTRICAL SPECIFICATIONS (CONTINUED)

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 range.

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

IDR(PK)

tDH

tDL

Note 1:

Peak Drive Current

mA Sinking: VIN = 3.75V, VDR = 1V;

Sourcing: VIN = 4.3V, VIN â VOR = 2V

Drive High Delay

(Notes 1, 5)

ïsec CDR = 1.2nF, VIN ramping up,

measured from VIN = VTH(HI) to VDR = 2V

Drive Low Delay

(Notes 1, 5)

0.6

1.5

ïsec CDR = 1.2nF, VIN ramping down,

3.0

measured from VIN = VTH(LO) to VDR = 2V

Ensured by design.

See 5V Detect Thresholds, Figure 4-1.

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.

In Application Circuit, Figure 3-1.

See Timing Diagram, Figure 4-2.

Ground Current is independent of ILOAD.

ï£ 2001-2012 Microchip Technology Inc.

DS21378C-page 3

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