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参数资料
| 型号： | R1283Z1A-E2 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 电源模块 |
| 英文描述： | DC-DC REG PWR SUPPLY MODULE |
| 封装： | 1.50 X 2.40 MM, WLCSP-11 |
| 文件页数： | 1/22页 |
| 文件大小： | 416K |
| 代理商： | R1283Z1A-E2 |
R1283x series
2ch DCDC for CCD & OLED
NO.EA-157-071019
1
OUTLINE
The R1283X 2ch DC/DC converter is designed for CCD & OLED Display power source. It contains a step up
DC/DC converter and an inverting DC/DC converter to generate two required voltages by CCD & OLED Display.
Step up DC/DC converter generates boosted output voltage up to 20V. Inverting DC/DC converter generates
negative voltage up to Vin voltage minus 20V independently. Start up sequence is internally made. Each of the
R1283X series consists of an oscillator, a PWM control circuit, a voltage reference, error amplifiers, over current
protection circuits, short protection circuits, an under voltage lockout circuit (UVLO), an Nch driver for boost
operation, a Pch driver for inverting, and so on. A high efficiency boost and inverting DC/DC converter can be
composed with external inductors, diodes, capacitors, and resistors.
FEATURES
Operating Voltage···· 2.5V ~ 5.5V
Step Up DC/DC (CH1)
Internal Nch MOSFET Driver (Ron=400m
Typ.)
Adjustable Vout Up to 20V with external resistor
Internal Soft start function (Typ. 4.5ms)
Over Current Protection
Maximum Duty Cycle: 91%(Typ.)
Inverting DC/DC (CH2)
Internal Pch MOSFET Driver (Ron=400m
Typ.)
Adjustable Vout Up to Vdd-20V with external resistor
Auto Discharge function for negative output
Internal Soft start function (Typ. 4.5ms)
Over Current Protection
Maximum Duty Cycle: 91%(Typ.)
Short Protection with timer latch function (Typ. 50ms); Short condition for either or both two outputs
makes all output drivers off and latches./ If the maximum duty cycle continues for a certain time, these
output drivers will be turned off.
CE with start up sequence function
CH1
→CH2 (R1283K001X)/CH2->CH1(R1283K002X) Selectable
UVLO function.
Operating Frequency Selection···· 300kHz / 700kHz / 1400kHz
Small package···· DFN（PLP）12 ( 2.7mm x 3.0mm ) or WLCSP11( 1.5mm x 2.4mm )
APPLICATION
Fixed voltage power supply for portable equipment
Fixed voltage power supply for CCD,OLED,LCD
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