L9177ATR datasheet(13/55 Pages) STMICROELECTRONICS

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2.5.7

5 V tracking voltage regulator

Table 12. VDD_TRK output electrical characteristics

Symbol

Parameter

Condition

Min Typ

Max

Unit

DVddtrk

Output voltage tracking error

VB = 6 V,

Itrk= 1 to 40 mA

-15

Vshort

Tracking output short circuit voltage range

-2

V B

Itrk_max

Output current limitation

Output short to 4 V

100

Itrk_sb

Tracking output reverse current (limited by the regulator)

Output shorted to VB = 16 V

Idd

Load current

Ln_vdd_trk

Line regulation

V B= 6 V to 18 V - Iload= 40 mA

-15

Ld_vdd_trk

Load regulation

V B= 13 V Iload = 1 to 40 mA

-15

PSRR

Power supply rejection ratio

Sin wave @ 1 kHz 1 Vpp

VB = 13 V, Iload = 1 to 40 mA

Figure 7. 5 V tracking regulator block diagram

5V_internal

GADG0412171138PS

2.5.8

Standby regulator

Table 13. VDD_SB output electrical characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Vddsb

Output voltage

4.75

5.25

Ln_vsb

Line regulation

VB = 6 V to 18 V

Iload = 1 mA

-25

Ld_vsb

Load regulation

VB = 13 V

Iload= 0.1 mA to 2.5 mA

-25

Vdd_OS

Max overshoot

5.5

Idd

Load current

0.1

2.5

L9177A

Electrical characteristics

DS12175 - Rev 5

page 13/55

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