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TLE4254

High Accuracy Low Dropout Voltage Tracking Regulator

Infineon Technologies 

TLE4254

Electrical Characteristics

Table 1 Electrical Characteristics Tracking Regulator

VI = 13.5 V; VADJ/EN ≥ 2.0 V; VFB = VQ (version GA / EJ A); -40 °C ≤ Tj ≤ 150 °C; CQ = 1 µF;

all voltages with respect to ground (unless otherwise specified).

Pos. Parameter

Symbol

Limit Values

Unit Test Condition

Min. Typ. Max.

5.1.6 Power Supply Ripple

Rejection

PSRR 60 –

–

dB fripple = 100 Hz;

Vripple = 1 Vpp

IQ = 5 mA

CQ = 10 µF, ceramic type 1)

5.1.7 Dropout Voltage

Vdr = VI - VQ

Vdr

–

200 400 mV IQ = 70 mA 2)

5.1.8 Output Current Limitation IQ,max

71

100 150 mA VQ = (VADJ/EN - 0.1 V);

VADJ/EN = 5 V

5.1.9 Reverse Current

IQ

-4

-2

–

mA VI = 0 V;

VQ = 32 V;

VADJ/EN = 5 V

5.1.10 Reverse Current

II

at Negative Input Voltage

-5

-3

–

mA VI = -16 V;

VQ = 0 V;

VADJ/EN = 5 V

Feedback Input FB (version GA / EJ A only):

5.1.11 Feedback Input Biasing

IFB

–

Current

0.1 0.5 µA VFB = 5 V

Overtemperature Protection:

5.1.12 Junction Temperature

Equilibrium

Tj,eq

151 –

200 °C Tj increasing due to power

dissipation generated

by the IC 1)

1) Parameter not subject to production test; specified by design.

2) Measured when the output voltage VQ has dropped 100 mV from its nominal value.

Data Sheet

9

Rev. 1.2, 2009-11-18

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