L99DZ320 datasheet(14/146 Pages) STMICROELECTRONICS

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2.4.4

Voltage regulator V1

The voltages are referred to ground, and currents are assumed positive, when the current flows into the pin.

4.5 < VS < 28 V, 4.5 V < VSREG < 28 V, TJ = -40 °C to 150 °C, unless otherwise specified.

Table 10. Voltage regulator 1

Symbol

Parameter

Test condition

Min. Typ. Max. Unit Item

Output voltage

VSREG ≥ 5.6 V

5.0

C.001

V110mA

Output voltage tolerance (0 ... Icmp)

ILOAD = 100 μA to Icmp,

VSREG = 13.5 V

-3

C.003

V1high_acc

Output voltage tolerance high accuracy

mode

ILOAD = Icmp to 100 mA,

active mode, VSREG = 13.5 V

-2

C.004

V1250mA Output voltage tolerance (100 … 250 mA)

ILOAD = 250 mA, VSREG = 13.5 V

-3

C.005

VDP1

Drop-out voltage

ILOAD = 50 mA

0.2

0.4

C.006

ILOAD = 100 mA

0.3

0.5

C.007

ILOAD = 150 mA

0.45 0.65

C.008

ICC1

Output current in active mode (to GND)

Maximum continuous load current

250

mA C.009

ICCmax1

Short-circuit output current (to GND)

Current limitation

340 600

900

mA C.010

Cload1(1)

Load capacitor 1

Ceramic (±20%)

1(2)

2.2

µF

C.011

tTSD

V1 deactivation time after thermal shutdown

Tested by scan

1.5

C.012

ICMP_ris(3) Current comp. rising threshold (to GND)

Rising current

mA C.013

ICMP_fal(3) Current comp. falling threshold (to GND)

Falling current

mA C.014

ICMP_hys(3) Current comp. hysteresis

mA C.015

V1fail

V1 fail threshold

V1 forced

C.019

tV1fail

V1 fail filter time

Tested by scan

µs

C.020

tV1short

V1 short filter time

Tested by scan

ms C.021

tV1FS

V1 fail-safe filter time

Tested by scan

1.43

2.06

ms C.022

tV1off

V1 deactivation time after 8 consecutive WD

failures

Tested by scan

200

270

ms C.023

1. Specified by design, not tested in production.

2. Nominal capacitor value required for stability of the regulator. Tested with 1 μF ceramic (±20%). Capacitor must be located

close to the regulator output pin. A 2.2 μF capacitor value is recommended to minimize the DPI stress in the application.

3. In active mode, V1 regulator is switched to high accuracy mode. Below the ICMP threshold, regulator switches in any case to

nominal accuracy mode (same behavior applies also in case of high current).

L99DZ320

Electrical specifications

DS14235 - Rev 5

page 14/146

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