Allegro UCN5829EB Datasheet

C

EN

9

IN

RC

SUPPLY

RC

HIGH-SIDE

DRIVER

5

6

GND

7

8

ONE-SHOT

9

10

11

12

13

14

15

16

17 29

GND GND

NC

18

NO

CONNECTION

3

4

V

DD

19

21

20

9

8

7

OUT

OUT

OUT

SERIAL DATA

OUT

1

2

CLK

SHIFT REGISTER

LATCHES

23

22

5

6

OUT

OUT

CLOCK

44

24

4

OUT

SERIAL DATA

IN

STROBE

43

424140

25

26

3

2

OUT

OUT

CV

R

CURRENT
CONTROL

27

1

OUT

REFERENCE

NC

28

NO

CONNECTION

GND

39

38

37

36

35

34

33

32

31

30

Dwg. PP-028A

ABSOLUTE MAXIMUM RATINGS

Output Current Voltage, V
Output Current, I

OUT(S)

(Continuous) ................................ 1.6 A

(Peak)............................................ 1.8 A

Logic Supply Voltage, V
Input Voltage Range,

V

....................... -0.3 V to V

IN

Package Power Dissipation,

PD........................................ See Graph

Operating Temperature Range,

T

..................................-20°C to +85°C

A

Junction Temperature, T

DISCONTINUED PRODUCT

Storage Temperature Range,

............................... -55°C to +150°C

T

S

* Fault conditions that produce excessive junction
temperature will activate device thermal shut­down circuitry. These conditions can be
tolerated, but should be avoided.

Caution: This CMOS device has input static
protection but is susceptible to damage when
exposed to extremely high static electrical
charges.

—

............ 50 V

OUT

.................. 7.0 V

DD

+ 0.3 V

DD

............... +150°C*

J

FOR REFERENCE ONL

26185.50

5829

9-BIT SERIAL-INPUT,

LATCHED SINK DRIVER

Intended primarily to drive high-current, dot matrix 9- and 24-wire
printer solenoids, the UCN5829EB serial-input, latched sink driver
provides a complete driver function with a minimum external parts
count. Included on chip are constant-frequency PWM current control
for each output driver, a user-defined output enable timeout, current
sensing, and thermal shutdown.

The 9-bit CMOS shift register and latches allow operation with
most microprocessor/LSI-based systems. With a 5 V logic supply,
these BiMOS devices will operate at data input rates greater than 3.3
MHz. The CMOS inputs cause minimum loading and are compatible
with standard CMOS, PMOS, NMOS, and TTL circuits. A CMOS serial
data output allows cascade connections in applications requiring
additional drive lines as required for 24-wire printheads.

The device features nine open-collector Darlington drivers, each
rated at 50 V and 1.6 A. Current-control for each output is provided by
an internal current-sensing resistor and a constant-frequency chopper
circuit. An external high-side driver can be used to optimize print head
performance. It is enabled by an on-chip driver during the output
enable timeout. Internal logic sequencing prevents false output
operation during power up. Other high-current devices for driving dot
matrix printheads are the UDN2961B/W and UDN2962W.

The UCN5829EB is supplied in a 44-lead power PLCC. Its
batwing construction provides for maximum package power dissipation
in a minimum-area, surface-mountable package.

FEATURES

■ 1.6 A Continuous Output Current

■ 50 V Minimum Sustaining Voltage

■ Internal Current Sensing

■ Constant-Frequency PWM Current Control

■ Control for External High-Side Driver

■ To 3.3 MHz Data Input Rate

■ Low-Power CMOS Logic & Latches

■ Internal Pull-Ups for TTL Compatibility

■ User-Defined Output Enable Timeout

■ Internal Thermal Shutdown Circuitry

Y

Data Sheet

Always order by complete part number: UCN5829EB .

5829

9-BIT SERIAL-INPUT,
LATCHED SINK DRIVER

FUNCTIONAL BLOCK DIAGRAM

R

EN

C

EN

STROBE

CLOCK

SERIAL

DATA IN

SERIAL

DATA OUT

IN

+5 V

3

V

DD

4

42

44

43

1

2

9

P.O.R.

ONE-SHOT

SHIFT REGISTER

LATCHES

7-17

29-39

HIGH-SIDE

DRIVER

65

TO DRIVERS 1, 3, 5, 7, 9

+5 V

÷2

CHOP INHIBIT

S RQ

TO DRIVERS 4, 6, 8

DRIVER TWO
OF NINE
DRIVERS

R

C

CURRENT

LEVEL

CONTROL

+
–

C

C

40

V

REF

41

R =
5 kΩ

±1%

OUT

26

2

<<1 Ω

Dwg. FP-015A

CV

12.5

R

θ

J

T

=

6

°

10

C

7.5

5.0

2.5

0

ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS

25

R

=

θJA

3

0

°C

/W

50 75 100 125 150

TEMPERATURE IN °C

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1991, 1995 Allegro MicroSystems, Inc.

/W

Dwg. GP-020B

LATCHED SINK DRIVER

TYPICAL INPUT CIRCUITS TYPICAL OUTPUT DRIVER

V

DD

IN

Dwg. EP-010-3

ELECTRICAL CHARACTERISTICS at T
in Test Circuit/Typical Application (unless otherwise noted).

= +25°C, V

A

DD

= 5 V,

5829

9-BIT SERIAL-INPUT,

OUT

N

<<1 Ω

Dwg. EP-021-2

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units
Output Power Drivers (OUT

through OUT9) with V

1

Output Leakage Current I
Output Saturation Voltage V

OUT(SAT)

Output Sustaining Voltage V

OUT

OUT(sus)

REF

≥4.5 V

V

= 50 V — 1.0 100 µA

OUT

I

= 1.0 A — 1.0 1.5 V

OUT

I

= 1.6 A — 1.5 1.9 V

OUT

I

= 1.6 A, L = 2.5 mH 50 — — V

OUT

Control Logic
HSD Output Saturation Voltage V

CE(SAT)

Logic Input Voltage V

V

Logic Input Current I

Reference Input Current I
Logic Supply Current I

(V

= 2.0 V)

REF

Maximum Clock Frequency f
Serial Data Output Voltage V

OUT(1)

V

OUT(0)

Clock to Serial Data Out Delay t
Thermal Shutdown Temperature T

IN(1)
IN(0)

IN

REF

DD

clk

PD

J

IC = 20 mA — 0.5 1.0 V

3.5 — 5.3 V

-0.3 — 0.8 V
VIN = 5.0 V — — 1.0 µA
V

= 0.8 V — -90 -180 µA

IN

V

= 3.0 V — 500 900 µA

REF

All Drivers OFF — 15 25 mA
All Drivers ON, No Load — 55 75 mA

3.3 5.0 — MHz

I

= -200 µA 4.5 4.7 — V

OUT

I

= 200 µA — 250 — mV

OUT

C

= 30 pF — — 300 ns

L

— 165 — °C

Continued next page...

5829

9-BIT SERIAL-INPUT,
LATCHED SINK DRIVER

ELECTRICAL CHARACTERISTICS at T

= +25°C, V

A

DD

= 5 V,

in Test Circuit/Typical Application (unless otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units
Chopping Characteristics (T

Enable Timeout t
Chopping Frequency f
Duty Cycle Range dc t
Chop Current Level I

Output Current Control Range V

Delay t
Chop Inhibit Voltage Range V

Negative current is defined as coming out of (sourcing) the specified device terminal.

= +25°C to +150°C) with Fast Clamp Diodes

J

EN

ch

TRIP

REF

I

TRIP

REF

d

REN = 20 kΩ, CEN = 0.01 µF 190 200 210 µs
RC = 20 kΩ, CC = 250 pF 90 100 110 kHz

/ ton + t

on

V

REF

V

REF

I

TRIP

off

= 2.0 V, fch < 100 kHz 0.9 1.0 1.1 A
= 2.8 V, fch < 100 kHz 1.26 1.4 1.54 A

to I

, TA = +25°C — 300 500 ns

OUT(P)

15 — < 50 %

1.0 — 3.2 V

0.5 — 1.6 A

4.5 — VDD + 0.3 V

V + 10 V

BB

Dwg. EP-027

EXTERNAL HIGH-SIDE DRIVERS

CHARGE-PUMP CIRCUITRY

FOR SINGLE-SUPPLY OPERATIONPMOSNMOS

V

V

BB

BB

0.022
µF

10 V

Dwg. EP-028

V

BB

Dwg. EP-026

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]