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參數(shù)資料
| 型號： | RT9216B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | VFM STEP UP DC/DC CONVERTER |
| 中文描述： | 衡工量值式升壓型DC / DC變換器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 192K |
| 代理商： | RT9216B |
Preliminary
RT9261B
DS9261B-03 September 2001
www.richtek-ic.com.tw
1
VFM Step-up DC/DC Converter
General Description
The RT9261B Series are VFM Step-up DC/DC
converter ICs with ultra low supply current by CMOS
process and suitable for use with battery-powered
instruments.
The RT9261B IC consists of an oscillator, a VFM
control circuit, a driver transistor (LX switch), a
reference voltage unit, an error amplifier, resistors
for voltage detection, and a LX switch protection
circuit. A low ripple and high efficiency step-up
DC/DC converter can be constructed with the
RT9261B IC and only three external components.
The CE pin enables the circuit to set the standby
supply current at a maximum of 0.5
μ
A.
Ordering Information
RT9261B-
Features
z
Minimal Number of External Components
(Only an Inductor, a Diode, and a Capacitor)
z
Ultra Low Input Current (6.5
μ
A at Switch Off)
z
Capable of Supplying 50mA Output Current
with Internal Switch
z
±
2% Output Voltage Accuracy
z
Low Ripple and Low Noise
z
Low Start-up Voltage, 0.8V at 1mA
z
80% Efficiency with Low Cost Inductor
z
+50 ppm/
°
C Low Temperature-Drift
z
SOT-89 and SOT-25 Small Packages
Applications
z
Power source for battery-powered equipment
z
Power source for cameras, camcorders, VCRs,
PDAs, pagers, electronic data banks, and hand-
held communication equipment
z
Power source for appliances, which require
higher voltage than that of batteries used in the
appliances
Pin Configurations
Part Number
Pin Configurations
RT9261B-
CX
(Plastic SOT-89)
TOP VIEW
1. GND
2. VOUT (TAB)
3. LX
RT9261B-
CB
(Plastic SOT-25)
TOP VIEW
1. CE
2. VOUT
3. NC
4. GND
5.
LX
Operating temperature range
C: Commercial standard
Package type
B : SOT-25
X : SOT-89
Output voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
5
4
3
2
1
1
2
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RT9261B-23CB | VFM STEP UP DC/DC CONVERTER |
| RT9261B-36CX | VFM STEP UP DC/DC CONVERTER |
| RT9261B-34CB | VFM STEP UP DC/DC CONVERTER |
| RT9261B-47CX | VFM STEP UP DC/DC CONVERTER |
| RT9261B-45CB | VFM STEP UP DC/DC CONVERTER |
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