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PDF RT9297 Data sheet ( Hoja de datos )
| Número de pieza | RT9297 | |
| Descripción | 3A High Performance Step-Up DC/DC Converter | |
| Fabricantes | Richtek Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9297 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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RT9297
3A High Performance Step-Up DC/DC Converter
General Description
The RT9297 includes a high performance step-up DC/DC
converter that provides a regulated supply voltage for active-
matrix thin-film transistor (TFT) liquid-crystal displays
(LCDs).
The Boost Converter incorporates current mode, fixed-
frequency, pulse-width modulation (PWM) circuitry with
a built-in N-Channel power MOSFET to achieve high
efficiency and fast transient response.
The RT9297 is available in a WDFN -10L 3x3 package
Ordering Information
RT9297
Package Type
QW : WDFN-10L 3x3 (W-Type)
Operating Temperature Range
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richtek Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Features
z High Efficiency Up to 90%
z Adjustable Output Voltage : VDD to 24V
z Wide Input Supply Voltage : 2.6V to 5.5V
z Input Under Voltage Lockout
z Pin-Programmable Switching Frequency
640kHz/1.2MHz
z Programmable Soft-Start
z Small 10-Lead WDFN Package
z RoHS Compliant and Halogen Free
Applications
z Notebook Computer Displays
z LCD Monitor Panels
z LCD TV Panels
Pin Configurations
(TOP VIEW)
COMP 1
FB 2
EN 3
GND 4
GND 5
10 SS
9 FREQ
8 VDD
7 LX
11 6 LX
WDFN-10L 3x3
Typical Application Circuit
VDD
2.6V to 5.5V
C1
R3
C3
L1 D1
RT9297
8 VDD
LX 6, 7
9 FREQ
3 EN
1 COMP
GND
FB 2
SS 10 CSS
4, 5
Exposed Pad (11)
R1
R2
VAVDD
C2
DS9297-00 May 2010
www.richtek.com
1
1 page  
Typical Operating Characteristics
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs. Load Current
VDD = 5V
VDD = 3.3V
VAVDD = 13.6V, f = 1.2MHz
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Load Current (A)
13.70
13.69
13.68
13.67
13.66
13.65
13.64
13.63
13.62
13.61
13.60
0
Output Voltage vs. Load Current
VDD = 5V
VDD = 3.3V
VAVDD = 13.6V, f = 1.2MHz
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Load Current (A)
13.66
Output Voltage vs. Input Voltage
13.65
13.64
13.63
13.62
13.61
13.60
IAVDD = 0mA
IAVDD = 100mA
IAVDD = 200mA
IAVDD = 300mA
IAVDD = 400mA
13.59
13.58
f = 1.2MHz
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
DS9297-00 May 2010
RT9297
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs. Load Current
VDD = 5V
VDD = 3.3V
VAVDD = 13.6V, f = 640kHz
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Load Current (A)
13.70
13.69
13.68
13.67
13.66
13.65
13.64
13.63
13.62
13.61
13.60
0
Output Voltage vs. Load Current
VDD = 5V
VDD = 3.3V
VAVDD = 13.6V, f = 640kHz
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Load Current (A)
13.66
Output Voltage vs. Input Voltage
13.65
13.64
13.63
13.62
13.61
13.60
IAVDD = 0mA
IAVDD = 100mA
IAVDD = 200mA
IAVDD = 300mA
IAVDD = 400mA
13.59
f = 640kHz
13.58
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
www.richtek.com
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet RT9297.PDF ] | |
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