ST STP04CM596 User Manual

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General features

■ 4 constant current output channels

■ Adjustable output current through one external

resistor

■ Serial data IN/parallel data OUT

■ Serial OUT change state on the failing edges of

clock

■ Four outputs current: 80-500mA

■ 25MHz clock frequency

■ Available in high thermal TSSOP exposed pad.

Description

STP04CM596

4-Bit constant current for power-LED

LED sink driver

Dip-14

TSSOP16

(Exposed pad)

SO-14

The STP04CM596 is a high-power LED Driver
and 4-bit shift register designed for PowerLED
applications.

The STP04CM596 contains a 4-bit serial IN,
parallel OUT shift register that feeds a 4-bit D­type storage register. In the output stage, four
regulated current sources were designed to
provide 80-500mA constant current to drive the
high powered LEDs.

The STP04CM596 guarantees 16V output driving
capability, allowing users to connect more LEDs in
series. The high clock frequency, 25 MHz, also
satisfies the system requirements which include
high volume data transmission.

The STP04CM596 is well suited for very high
brightness displays and special lighting
applications.

The STP04CM596 is offered in DIP-14, SO-14
and TSSOP16 Exposed Pad packages.

Order codes

Part Number Package Packaging

STP04CM596B1R DIP-14 25 parts per tube

STP04CM596M SO-14 (Tube) 50 parts per tube

STP04CM596MTR SO-14 (Tape & Reel) 2500 parts per reel

STP04CM596XTTR TSSOP16 Exposed-pad (Tape & Reel) 2500 parts per reel

July 2006 Rev 5 1/24

www.st.com

24

Contents STP04CM596

Contents

1 Internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Equivalent circuit of inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . 9

6 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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STP04CM596 Internal schematic

1 Internal schematic

Figure 1. Block diagram

3/24

Pin settings STP04CM596

2 Pin settings

2.1 Pin connection

Figure 2. Pin connection

DIP-14/SO-14

2.2 Pin description

Table 1. Pin description

DIP-14 and SO-14 Pin N° TSSOP16 Pin N° Symbol Name and function

1 1, 2 GND Ground terminal

2 3 SDI Serial data input terminal

3 4 CLK Clock input terminal

4 5 LE Latch input terminal

5 6 OUT 0 Output terminal

6 7 OUT 1 Output terminal

7, 8 8, 9, 12 N.C. Not connected

9 10 OUT 2 Output terminal

10 11 OUT 3 Output terminal

11 13 OE

12 14 SDO Serial data out terminal

TSSOP16 (Exposed pad)

Output enable input
terminal (active low)

13 15 R-EXT Constant current

14 16 V

4/24

DD

programming

5V supply voltage
terminal

STP04CM596 Maximum rating

3 Maximum rating

Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

V

I

GND

f

T

T

V

CLK

OPR

Supply voltage 0 to 7 V

DD

Output voltage -0.5 to 16 V

O

I

Output current 500 mA

O

V

Input voltage -0.4 to VDD+0.4 V

I

GND terminal current 2000 mA

Clock frequency 25 MHz

Operating temperature range -40 to +125 °C

Storage temperature range -55 to +150 °C

STG

3.1 Thermal data

Table 3. Thermal data

Symbol Parameter DIP-14 SO-14 TSSOP16 Unit

R

thJA

1. 1W of dissipated power, mounted on the board

2. 1W of dissipated power ,mounted on SM PCB1 SGS board

3. Using the PCB Multi-Layer JEDEC Standard Test Boards

Thermal resistance junction-ambient

70

(1)

105

(2)

37.5

(3)

°C/W

5/24

Maximum rating STP04CM596

3.2 Recommended operating conditions

Table 4. Recommended operating conditions

Symbol Parameter Test conditions Min Typ Max Unit

V

DD

V

O

I

O

I

OH

I

OL

V

IH

V

IL

t

wLAT

t

wCLK

t

wEN

t

SETUP(D)

t

HOLD(D)

t

SETUP(L)

t

HOLD(E)

f

CLK

T

OPR

Supply voltage 3.3 5.0 5.5 V

Output voltage 16.0 V

Output current

OUTn V

DD

= 5V

80 500 mA

Output current Serial-OUT +1 mA

Output current Serial-OUT -1 mA

Input voltage

0.7V

Input voltage -0.3

LE pulse width

20 6.5 ns

DD

VDD+0.3

0.3V

DD

V

V

CLK pulse width 20 7.0 ns

OE pulse width 400 100 ns

= 3.0 to 3.6V

Setup time for DATA 20 3.3 ns

V

DD

Hold time for DATA 15 1.5 ns

Setup time for LATCH 15 5 ns

Hold time for ENABLE 60 38 ns

Clock frequency

Operating temperature
range

Cascade operation

(1)

-40 +125 °C

25 MHz

1. If multiple devices are cascaded, it may not be possible achieve the maximum data transfer. Please
consider the timing conditions carefully.

6/24

STP04CM596 Electrical characteristics

4 Electrical characteristics

Table 5. Current accuracy

Output voltage

Between bits Between ICs

≥ 0.7V Typ. ± 1% ± 6% 80 to 500 mA

Table 6. Electrical characteristics (V

Symbol Parameter Test conditions Min Typ Max Unit

∆I

∆I

V

V

I

V

V

I

OL1

I

OL2

OH

Input voltage high level

IH

Input voltage low level GND

IL

Output leakage current

Output voltage

OL

(Serial-OUT)

Output voltage

OH

(Serial-OUT)

Output current

Output current error

OL1

between bit (All Output

OL2

ON)

Current accuracy

= 5V, TA = 25°C, unless otherwise specified.)

DD

0.7V

DD

= 16 V

V

OH

IOL = 1mA

IOH = -1mA VDD-0.4V

V

= 0.7VR

O

VO = 0.7VR

VO = 0.7VR

VO = 0.7VR

EXT

EXT

EXT

EXT

= 910 Ω

= 160 Ω

= 910 Ω

= 160 Ω

77 82 87 mA

470 500 530 mA

1± 3%

0.5 ± 3 %

Output current

V

0.3V

DD

DD

V

V

10 µA

0.4 V

V

R

SIN(up)

R

SIN(down)

I

DD(OFF1)

I

DD(OFF2)

I

DD(OFF3)

I

DD(ON1)

I

DD(ON2)

Pull-up resistor 150 300 600 KΩ

Pull-down resistor 100 200 400 KΩ

R

= OPEN

Supply current (OFF)

EXT

OUT 0 to 3 = OFF

R

= 470 Ω

EXT

OUT 0 to 3 = OFF

R

= 250 Ω

EXT

OUT 0 to 3 = OFF

= 470 Ω

R

EXT

OUT 0 to 3 = ON

0.3 0.6

5.2 8.0

8.0 12

5.6 8.0

mA

Supply current (ON)

R

= 250 Ω

EXT

OUT 0 to 3 = ON

8.3 12

7/24

Electrical characteristics STP04CM596

Table 7. Switching characteristics (VDD=5V, T = 25°C, unless otherwise specified.)

Symbol Parameter Test conditions Min Typ Max Unit

t

PLH1

t

PLH2

Propagation delay time,
CLK-OUTn

, LE = H, OE = L

Propagation delay time,
LE-OUTn, OE = L

100 160 ns

100 150 ns

t

PLH3

t

t

PHL1

t

PHL2

t

PHL3

t

1. If multiple devices are cascaded, it may not be possible achieve the maximum data transfer. Please

Propagation delay time,
OE-OUTn, LE = H

Propagation delay time,

PLH

CLK-SDO

Propagation delay time,
CLK-OUTn, LE = H, OE = L

Propagation delay time,
LE -OUTn, OE = L

Propagation delay time,
OE-OUTn, LE = H

Propagation delay time,

PHL

CLK-SDO

t

Output rise time

r

t

Output fall time

f

consider the timing conditions carefully.

(1)

(1)

V

= 5 VVIH = V

DD

DD

VIL = GNDCL = 13pF

= 40mAVL = 3 V

I

O

= 470 ΩRL = 65 Ω

R

EXT

VO = 1.6 V, RL = 1 Ω

= 470 Ω

R

EXT

90 140 ns

30 40 ns

40 60 ns

35 50 ns

40 70 ns

30 40 ns

300 400 ns

55 80 ns

8/24