PIN DESCRIPTION

Nr.

Name

Description

1

Out-Up

Solenoid section upper DMOS output.

2

BSE

Solenoid section upper DMOS bootstrap. A capacitor connected between pin 2 and pin 1

ensures the efficient driving of the solenoid section upper DMOS.

3

ENABLE

Solenoid control input - TTL compatible.

Unregulated voltage input - Solenoid section.

5, 6

GND

Ground.

7

PF

Power fail output, the saturation of PF is guaranteed if VPS exceed 3V. PF is at logic 1 a

down under 18V. (see fig. 1)

8

PFP

Power fail programming. A resistor divider connected to VPS changes the Power fail

threshold levels.

9

CD

Capacitor delay. A capacitor connected to this pin determines the Reset signal delay time

10

Unregulated voltage input - SMPS sections.

11

VD

Regulator output and diode voltage control.

12

BSA

SMPS section DMOS bootstrap. A capacitor connected between pin 12 and pin 11

ensures efficient driving of SMPS DMOS.

13

RESET

Reset output. The saturation of Reset is guaranteed if VPS exceeds 3V. The Reset output

reaches the logic level 1 a time delay (set by capacitor CD) after VPS has reached a

rising threshold voltage. Reset reaches 0 level when VPS goes down below folling

threshold.

14

Feed back input of the regulation loop.

15, 16

GND

Ground.

17

Connection for solenoid sensing resistor.

18

PIM

Programming of solenoid current rising edge. An RC network connected to this pin

determines the slope of the solenoid current rising edge.

19

ISTP

Programming of solenoid current histeresys.

20

Out-Down

Solenoid section lower DMOS output.

50mA, VPS from 12V to 46V; unless otherwise specified.

Pin

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

STEP-DOWN SECTION

10, 4

Supply Voltage

14

46

V

14

Output Voltage

4.85

5.2

V

On State Drain Resistance

°C; VPS = 15 to 46V

0.56

0.7

Ω

10

Turn-on Threshold

VPS Rising Fig. 1

10

12

V

10

Turn-off Threshold

VPS Falling Fig. 1

10

12

V

10

Input Bias Current

15

mA

11

Static Current Limiting

2.2

3.4

A

2, 10

Total Input Current

ENABLE = 1, VPS = 46V,

13

mA

2, 10

Total Input Current

ENABLE = 1, VPS = 15V,

18

mA

11

Protection Current Maximum

Delay Time

1

µs

Minimum Power off State

4.2

7.8

µs

L6213

4/9