|
|
PDF STP2CMP Data sheet ( Hoja de datos )
| Número de pieza | STP2CMP | |
| Descripción | Low voltage 2-channel constant current LED driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de STP2CMP (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
|
No Preview Available !
STP2CMP
Low voltage 2-channel constant current
LED driver with charge pump
Datasheet - production data
QFN20 (1.8x3.2 mm)
Features
Operating voltage range: VCC 2.7 V to 5.5 V
2-channel LED driver with individual
ON/OFF control directly from input pins
Individually programmable output current for
the 2 channels through 2 external resistors
with a max. capability of 30 mA
Absolute output current accuracy of max.
±7% and channel-to-channel mismatch of
max. ±4%
Selectable charge pump enable/disable
Thermal protection
Small QFN20 (1.8x3.2 mm) package
Applications
Mobile phone display backlighting
Description
The STP2CMP is a charge-pump-based 2-
channel LED driver designed for RGB
illumination or LCD display backlighting. The
STP2CMP works off a battery with an input
voltage between 2.7 V and 5.5 V. The device
generates regulated current sinks with high
absolute and channel-to-channel accuracy to
drive up to 2 LEDs. It can support LEDs with
forward voltage as high as 3.8 V. The current
sink for each channel can be set with 2 individual
external resistors. Each channel is controlled
independently. The PWM control can be applied
directly to the 2 EN (enable) pins to provide
brightness control. When enabled, the charge
pump, which uses a small ceramic bucket
capacitor between C1P and C1N, operates to
regulate the VOUT with a clamping voltage at typ.
5 V. The tiny QFN20 (1.8x3.2 mm) package
allows the device to be also used for applications
with space limitations.
Table 1: Device summary
Oder code
Package
Packing
STP2CMPQTR
QFN20
(1.8x3.2 mm)
Tape and reel
April 2015
DocID022734 Rev 2
This is information on a product in full production.
1/23
www.st.com
1 page  
STP2CMP
1 Application schematic
Figure 1: Application schematic
Application schematic
NC
ON1
NC
ON2
EN
NC
GND
C1N
C1P
VOUT
VCC
NC
C2
C3
C1
RSET1
ISET1
NC
LED1
NC
LED1
ISET2
LED2
RSET2
GND CP_SEL
LED2
COUT
GIPG250320151342LM
Figure 1: "Application schematic" shows the typical application diagram with the external
components. To ensure an optimal charge pump performance, it is highly recommended
that the bucket capacitor, C1, and the output capacitor, COUT, be placed as close as
possible to the pins.
Table 2: Typical external components
Component Manufacturer
Part number
Value
Size
CIN,COUT
Murata
TDK
GRM155R61A105KE15D
C1005X5R1A105MT
1 µF/10 V
0402
Murata
GRM188R60J106ME84
C2
10 µF/6.3 V
0603
TDK C1608X5R0J106MT
C3
RSET1-2(1)
LED1-2 (2)
Murata
TDK
Tyco
GRM155R60J104KA01D
C1005X5R1C104KT
CPF0402B976RE1
100 nF
976 Ω
0402
0402
Notes:
(1)649 Ω to 7.87 kΩ according to the desired output current from each channel.
(2)Forward voltage typ. 3.8 V.
All the above components refer to a typical application. Operation of the device is
not limited to the choice of these external components.
DocID022734 Rev 2
5/23
5 Page 
STP2CMP
Typical performance characteristics
6 Typical performance characteristics
Figure 4: Efficiency vs. VIN, IOUT = 10 mA
100
95 EFF 29
90
85
IIN 27
80
75 25
70 23
65
60 21
55
50 19
45
40 17
35
30 15
2.7 3.0 3.2 3.5 3.7 4.0 4.2 4.5 4.7 5.0 5.2 5.5
VIN [V]
GIPG260320150908LM
Figure 5: Efficiency vs. VIN, IOUT = 60 mA
100 260
95 EFF
90
85
Iin 250
80
75 240
70
65 230
60
55
50
220
45
40 210
35
30 200
2.7 3.0 3.2 3.5 3.7 4.0 4.2 4.5 4.7 5.0 5.2 5.5
V IN [V]
GIPG260320150922LM
DocID022734 Rev 2
11/23
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet STP2CMP.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| STP2CMP | Low voltage 2-channel constant current LED driver | STMicroelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |