ST STP16CPP05 User Manual

Low voltage 16-bit constant current LED sink driver

Features

■ 16 constant current output channels

■ Adjustable output current through external

resistor

■ Output current: 3-40 mA

■ Serial data in/parallel data ouT

■ 3.3 V or 5 V supply voltage

■ Max clock frequency 30 MHz

■ Schmitt-trigger input

■ ESD protection 2 kV HBM

■ Thermal shutdown

Description

QSOP-24

TSSOP24

STP16CPP05

SO-24

TSSOP24

(exposed pad)

The STP16CPP05 is a monolithic, low voltage,
low current power 16-bit shift register designed for
LED panel displays. The STP16CPP05 contains a
16-bit serial-in, parallel-out shift register that
feeds a 16-bit, D-type storage register. In the
output stage, sixteen regulated current sources
provide from 3 mA to 40 mA constant current to
drive the LEDs.

The output current setup time is 40 ns (typ), thus
improving the system performance.

The LEDs' brightness can be controlled by using
an external resistor to adjust the STP16CPP05
output current.

Table 1. Device summary

Order codes Package Packaging

STP16CPP05MTR SO-24 1000 parts per reel

STP16CPP05TTR TSSOP24 2500 parts per reel

STP16CPP05XTTR TSSOP24 exposed pad 2500 parts per reel

The STP16CPP05 guarantees a 20 V output
driving capability, allowing users to connect more
LEDs in series.The high clock frequency, 30 MHz,
makes the device suitable for high data rate
transmission. The 3.3 V voltage supply is useful in
applications that interface with a 3.3 V micro
controller.

STP16CPP05PTR QSOP-24 2500 parts per reel

October 2009 Doc ID 15379 Rev 2 1/28

www.st.com

28

Contents STP16CPP05

Contents

1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Equivalent circuit and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2/28 Doc ID 15379 Rev 2

STP16CPP05 Summary description

1 Summary description

Table 2. Typical current accuracy

Output voltage

Current accuracy

Between bits Between ICs

≥ 1.3 V ± 1.2% ±5% ≥ 5 to 40 mA 3.3 V to 5 V 25 °C

1.1 Pin connection and description

Figure 1. Pin connection

Output current

V

DD

Temperature

Note: The exposed pad should be electrically connected to a metal land electrically isolated or

connected to ground.

Table 3. Pin description

Pin N° Symbol Name and function

1 GND Ground terminal

2 SDI Serial data input terminal

3 CLK Clock input terminal

4 LE Latch input terminal

5-20 OUT 0-15 Output terminal

21 OE

22 SDO Serial data out terminal

23 R-EXT Input terminal of an external resistor for constant current programing

24 V

DD

Input terminal of output enable (active low)

Supply voltage terminal

Doc ID 15379 Rev 2 3/28

Electrical ratings STP16CPP05

2 Electrical ratings

2.1 Absolute maximum ratings

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.

Table 4. Absolute maximum ratings

Symbol Parameter Value Unit

V

V

I

V

I

GND

f

CLK

DD

O

Supply voltage 0 to 7 V

Output voltage -0.5 to 20 V

O

Output current 50 mA

Input voltage -0.4 to VDD+0.4 V

I

GND terminal current 800 mA

Clock frequency 50 MHz

2.2 Thermal data

Table 5. Thermal data

Symbol Parameter Value Unit

T

OPR

T

STG

R

thJC

1. The exposed pad should be soldered directly to the PCB to realize the thermal benefits.

Operating temperature range -40 to +125 °C

Storage temperature range -55 to +150 °C

Thermal resistance junction-case

SO-24 60 °C/W

TSSOP24 85 °C/W

(1)

TSSOP24

Exposed Pad

QSOP-24 72 °C/W

37.5 °C/W

4/28 Doc ID 15379 Rev 2

STP16CPP05 Electrical ratings

2.3 Recommended operating conditions

Table 6. Recommended operating conditions at 25 °C

Symbol Parameter Test conditions Min Typ Max Unit

V

V

I

I

V

V

t

wLAT

t

wCLK

t

wEN

t

SETUP(D)

t

HOLD(D)

t

SETUP(L)

f

CLK

1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please
considered the timings carefully.

Supply voltage 3.0 5.5 V

DD

Output voltage 20 V

O

Output current OUTn 3 40 mA

I

O

Output current SERIAL-OUT +1 mA

OH

Output current SERIAL-OUT -1 mA

OL

Input voltage 0.7 V

IH

Input voltage -0.3 0.3 V

IL

LE pulse width

DD

20 ns

CLK pulse width 16 ns

OE pulse width 70 ns

VDD = 3.3 V to 5.0 V

Setup time for DATA 5 ns

Hold time for DATA 5 ns

Setup time for LATCH 15 ns

Clock frequency Cascade operation

(1)

VDD+0.3 V

DD

30 MHz

V

Doc ID 15379 Rev 2 5/28

Electrical characteristics STP16CPP05

3 Electrical characteristics

VDD = 3.3 V to 5 V, T = 25 °C, unless otherwise specified.

Table 7. Electrical characteristics

Symbol Parameter Test conditions Min Typ Max Unit

V

IH

V

IL

I

OH

V

OL

V

OH

I

OL1

OL2

I

OL3

ΔI

OL1

OL2

ΔI

OL3

R

SIN(up)

R

SIN(down)

I

DD(OFF1)

I

DD(OFF2)

I

DD(ON1)

I

DD(ON2)

Input voltage high level 0.7V

DD

Input voltage low level GND 0.3V

V

DD

DD

V

V

Output leakage current VOH = 20 V 0.15 1 μA

Output voltage
(Serial-OUT)

Output voltage
(Serial-OUT)

Output current

Output current error
between bit
(All Output ON)

= 1 mA 0.4 V

I

OL

= -1 mA VDD-0.4V V

I

OH

= 0.3 V, R

V

O

VO = 0.3 V, R

VO = 1.3 V, R

VO = 0.3 V, IO = 5 mA

= 4 kΩ

R

EXT

VO = 0.3 V, IO = 20 mA
R

= 980 Ω

EXT

VO = 1.3 V, IO = 40 mA
R

= 490 Ω

EXT

= 4 kΩ 4.75 5 5.25

ext

= 980 Ω 19 20 21

ext

= 490 Ω 38 40 42

ext

± 1.2 ± 5

± 0.5 ± 3

± 1.0 ± 3

mAI

%ΔI

Pull-up resistor 150 300 600 kΩ

Pull-down resistor 100 200 400 kΩ

R

= 980

EXT

OUT 0 to 15 = OFF

5.4 7.5

Supply current (OFF)

R

= 490

EXT

OUT 0 to 15 = OFF

8.0 9.5

mA

R

= 980

EXT

OUT 0 to 15 = ON

5.5 7.5

Supply current (ON)

R

= 490

EXT

OUT 0 to 15 = ON

8.1 9.5

Thermal Thermal protection 170 °C

6/28 Doc ID 15379 Rev 2

STP16CPP05 Electrical characteristics

V

= 5 V, T = 25 °C, unless otherwise specified.

DD

Table 8. Switching characteristics

Symbol Parameter Test conditions Min Typ Max Unit

V

= 3.3 V - 44 58

t

PLH1

t

PLH2

t

PLH3

t

Propagation delay time,
CLK-OUTn

Propagation delay time,
LE-OUTn, OE = L

Propagation delay time,
OE-OUTn, LE = H

Propagation delay time,

PLH

CLK-SDO

, LE = H, OE = L

Propagation delay time,

t

PHL1

t

PHL2

t

PHL3

t

PHL

CLK-OUTn
OE = L

Propagation delay time,
LE-OUTn

Propagation delay time,
OE-OUTn, LE = H

Propagation delay time,
CLK-SDO

, LE = H,

, OE = L

V

= V

IH

DD

VIL = GND CL = 10 pF

= 20 mA VL = 3.0 V

I

O

R

= 1 KΩ RL = 60 Ω

EXT

Output rise time

t

10~90% of current

ON

waveform

Output fall time

t

90~10% of current

OFF

waveform

CLK rise time

t

r

t

CLK fall time

f

1. In order to achieve high cascade data transfer, please consider tr/tf timings carefully.

(1)

(1)

DD

= 5 V - 24 32

V

DD

= 3.3 V - 43 56

V

DD

= 5 V - 24 32

V

DD

= 3.3 V - 63 82

V

DD

= 5 V - 37 48

V

DD

= 3.3 V - 17 22

V

DD

= 5 V - 11 14

V

DD

V

= 3.3 V - 22 28

DD

= 5 V - 16 21

V

DD

VDD = 3.3 V - 19 25

= 5 V - 15 20

V

DD

= 3.3 V - 16 21

V

DD

= 5 V - 13 17

V

DD

= 3.3 V - 21 27

V

DD

= 5 V - 13 17

V

DD

VDD = 3.3 V - 26 35

= 5 V - 12 16

V

DD

VDD = 3.3 V - 4 6

= 5 V - 3 5

V

DD

-5000ns

-5000ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

Doc ID 15379 Rev 2 7/28

Equivalent circuit and outputs STP16CPP05

4 Equivalent circuit and outputs

Figure 2. OE terminal

Figure 3. LE terminal

Figure 4. CLK, SDI terminal

8/28 Doc ID 15379 Rev 2

STP16CPP05 Equivalent circuit and outputs

Figure 5. SDO terminal

Figure 6. Block diagram

Doc ID 15379 Rev 2 9/28