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參數(shù)資料
| 型號： | RT9262A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH EFFICIENCY, LOW SUPPLY CURRENT, STEP-UP DC/DC CONVERTER |
| 中文描述： | 高效率，低電源電流，升壓型DC / DC變換器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 110K |
| 代理商： | RT9262A |
Preliminary
RT9262/A
DS9262/A-04 August 2002
www.richtek.com
1
High Efficiency, Low Supply Current,
Step-up DC/DC Converter
General Description
The RT9262/A is a compact, high efficient, step-up
DC/DC converter with an adaptive current mode
PWM control loop, providing a stable and high
efficient operation over a wide range of load
currents. It operates in both continuous and
discontinuous current modes in stable waveforms
without external compensation.
The low start-up input voltage below 1V makes
RT9262/A suitable for 1 to 4 battery cell applications
providing up to 400mA output current. The 550KHz
high switching rate minimized the size of external
components. Besides, the 17
μ
A low quiescent
current together with high efficiency maintains long
battery lifetime.
The 1.8V to 5V output voltage is set with 2 external
resistors. Both internal 2A switch and driver for
driving external power devices (NMOS or NPN) are
provided.
A 300mA LDO is included in RT9262 to provide a
secondary low noise output as well as an output
current stop in the shutdown mode. Similarly, a 1.8V
to 5V LDO output voltage can be set with 2 external
resistors. For RT9262A, a low battery detector with
0.86V detection voltage is included. RT9262/A are
provided in SOP-8 packages.
Ordering Information
RT9262A
Features
z
1.0V Low Start-up Input Voltage
z
High Supply Capability to Deliver 3.3V 100mA
with 1V Input Voltage
z
17
μ
A Quiescent (Switch-off) Supply Current
z
90% Efficiency
z
550KHz Fixed Switching Rate
z
Providing Flexibility for Using Internal and
External Power Switches
z
Built-in 300mA LDO, also for the Zero-Output-
Current Shutdown Mode (RT9262)
z
Boost DC-DC Integrating LDO for Up-Down
Regulation (RT9262)
z
Built-in 0.86V Voltage Detector (RT9262A)
z
8-Pin SOP Package
Applications
z
PDA
z
Portable Instrument
z
Wireless Equipment
z
DSC
z
LCD Back Bias Circuit
z
RF-Tags
Pin Configurations
Part Number
Pin Configurations
RT9262CS
(Plastic SOP-8)
TOP VIEW
RT9262ACS
(Plastic SOP-8)
TOP VIEW
Operating temperature range
C: Commercial standard
Package type
S : SOP-8
A : Include low battery detector
Default : Include LDO
GND
EXT
LFB
LDOO
CE
LX
VDD
FB
1
2
3
4
8
7
6
5
GND
EXT
LBO
LBI
CE
LX
VDD
FB
1
2
3
4
8
7
6
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RT9262ACS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:HIGH EFFICIENCY, LOW SUPPLY CURRENT, STEP-UP DC/DC CONVERTER |
| RT9262AGS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:High Efficiency, Low Supply Current, Step-up DC/DC Converter |
| RT9262APS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:High Efficiency, Low Supply Current, Step-up DC/DC Converter |
| RT9262CS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:HIGH EFFICIENCY, LOW SUPPLY CURRENT, STEP-UP DC/DC CONVERTER |
| RT9262GS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:High Efficiency, Low Supply Current, Step-up DC/DC Converter |
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