|
|
PDF AAT3153 Data sheet ( Hoja de datos )
| Número de pieza | AAT3153 | |
| Descripción | High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AAT3153 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
AAT3153
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
General Description
Features
ChargePump™
The AAT3153 is a low noise, constant frequency
charge pump DC/DC converter that uses a tri-mode
load switch (1X), fractional (1.5X), and doubling (2X)
conversion to maximize efficiency for white LED
applications. The AAT3153 is capable of driving six-
channel LEDs from a 2.7V to 5.5V input. The current
sinks may be operated individually or in parallel for
driving higher-current LEDs. Low external parts
count (two 1µF flying capacitors and two small 1µF
capacitors at VIN and VOUT) makes this part ideally
suited for small battery-powered applications.
AnalogicTech's S2Cwire™ (Simple Serial Control™)
serial digital input is used to enable, disable, and
set current for each LED with eight settings (20mA
down to 50µA) including main and sub-display
group control. The AAT3153 consumes extremely
low current internally (40µA typical) at light load for
optimized efficiency.
• VIN Range: 2.7V to 5.5V
• Fully Programmable Current with Single Wire
• Eight-Step Current: 20mA-50µA
• Individual Main-Sub Group Control
• Low IQ (40µA) at Light Load
• Tri-Mode 1X, 1.5X, and 2X Charge Pump for
Maximum Efficiency and VF Coverage
• Drives Up to Six Channels of LEDs
• No Inductors, Low Noise Operation
• 1MHz Constant Switching Frequency
• Small Application Circuit
• Built-In Thermal Protection
• Built-In Auto-Disable for Short-Circuit
• Automatic Soft-Start
• IQ <1µA in Shutdown
• Thermal-Enhanced 4x4mm16-Pin QFN
Package
Each output of the AAT3153 is equipped with built-
in protection for VOUT short circuit and auto-disable
for load short-circuit condition. Built-in soft-start cir-
www.DataSheet4U.comcuitry prevents excessive inrush current during
start-up. A low current shutdown feature discon-
nects the load from VIN and reduces quiescent cur-
rent to less than 1µA.
Applications
• Color (RGB) Lighting
• Programmable Current Sinks
• White LED Backlighting
• White Photo-Flash for DSCs
The AAT3153 is available in a space-saving, thermal-
enhanced 16-pin 4x4mm QFN package.
Typical Application
2.7V to 5.5V
VIN C1+
CIN C1-
1µF C2+
AAT3153
C2-
VOUT
EN/SET
EN/SET
GND
D1
D2
D3
D4
D5
D6
C1
1µF
C2
1µF
D1 D2 D3 D4 D5 D6
COUT
1µF
3153.2004.10.0.6
1
www.DataSheet4U.com
1 page  
www.DataSheet4U.com
AAT3153
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
Typical Characteristics
Efficiency vs. Supply Voltage
100
90
80
70
60
50
2.8
4.1mA
10.2mA
20mA
3.0 3.2 3.4 3.6 3.8 4.0 4.2
Supply Voltage (V)
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(100mA/div)
Turn On to 1X Mode
VIN = 4.2V, DX = 20mA
100µs/div
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(100mA/div)
Turn On to 1.5X Mode
VIN = 3.5V, DX = 20mA
Turn On to 2X Mode
VIN = 2.8V, DX = 20mA
EN
www.DataShee(2Vt/d4CivP) U.com
(2V/div)
VSINK
(500mV/div)
IIN
(100mA/div)
100µs/div
100µs/div
EN
(2V/div)
VF
(1V/div)
IIN
(200mA/div)
Turn Off from 1.5X Mode
VIN = 3.5V, DX = 20mA
200µs/div
3153.2004.10.0.6
5
www.DataSheet4U.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AAT3153.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AAT3151 | High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications | Advanced Analogic Technologies |
| AAT3152 | High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications | Advanced Analogic Technologies |
| AAT3153 | High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications | Advanced Analogic Technologies |
| AAT3155 | High Efficiency 1X/1.5X/2X Charge Pump |  AAT |
| 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 |