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R1293 Series
Multi Power Supply IC with Amplifier for LCD

Product Specifications

The R1293 Series are multi power supply ICs dedicated for mid-size TFT LCD panels. Each of the IC consists of a PWM control step-up DC/DC converter, an LDO regulator, a VCOM amplifier and six GAMMA amplifiers. The output noise can be reduced by SEL pin. (SEL pin "H": normal mode, SEL pin "L": low noise mode.) The MOSFET for step-up DC/DC converter is built-in and, low power operation is realized by standby mode. The package is 4mm square DFN(PLP)0404-32.

FEATURES

Supply Current Typ. 300 µA (No switching)
Standby Current Typ. 60 µA (In standby)
Thermal Shutdown Circuit Stops at 150°C
Package QFN(PLP)0404-32
DC/DC Part
Input Voltage Range (Maximum Rating) 2.2 V to 5.5 V (6.5 V)
Feedback Voltage 1.0 V (The output voltage is adjustable up to 16.0 V with external resistors.)
Feedback Voltage Accuracy ±15 mV
Oscillator Frequency 300kHz to 1MHz with an external resistor
Oscillator Maximum Duty Cycle Set with an external resistor. (Limit typ. 90%)
OVP Voltage Typ. 21.0 V
UVLO Detect Voltage Typ. 1.9 V
Soft Start Time Typ. 10 ms
Coil-current Limit Circuit Current Limit Typ. 3 A
Latch Protection Circuit Delay time for protection adjustable with an external capacitor.
LDO Part
Input Voltage Range (Maximum Rating) 2.2 V to 5.5 V (6.5 V)
Peak Current Limit Circuit Min. 350 mA
Output Voltage Range 1.8 V to 2.5 V (Internally fixed)
Output Voltage Accuracy ±1%
Output Current 300 mA
Dropout Voltage Typ. 0.4 V (VSET≥2.4V, IOUT=250mA)
Ripple Rejection Typ. 65 dB (f=1kHz)
Fold-back Protection Circuit Current limit Typ. 70 mA
Buffer Amplifier Part
Input Voltage Range for Amplifiers (Maximum Rating) 5.0 V to 16.0 V (24 V)
Input Voltage Range for VCOM Amplifier 1.5 V to VBUFF-1.5 V
Output Current Range for VCOM Amplifier -100 mA to 100 mA
Input Voltage Range for GAMMA Amplifier 0 V to VBUFF
Output Current Range for GAMMA Amplifier -10 mA to 10 mA

APPLICATION INFORMATION

For external parts, please refer to the datasheet.

PIN DESCRIPTION

QFN(PLP)0404-32

QFN(PLP)0404-324.0 mm × 4.0 mm
1 PGND
2 PGND
3 VO_LDO
4 VIN_LDO
5 IN_GM1
6 IN_GM2
7 IN_GM3
8 IN_GM4
9 IN_GM5
10 IN_GM6
11 VO_GM1
12 VO_GM2
13 VO_GM3
14 VO_GM4
15 VO_GM5
16 VO_GM6
17 GND
18 VBUFF
19 IN_COM
20 VO_COM
21 GND
22 RT
23 DTC
24 SEL
25 DELAY
26 ENB
27 VFB
28 AMPOUT
29 GND
30 VIN_DC
31 Lx
32 Lx

*) The tab is substrate level (GND).


R1293 Series for Consumer

APPLICATIONS

  • Power sources of the medium and small sized TFT LCD panels

SELECTION GUIDE

The output voltage (VOUT) for the ICs is a user-selectabe option.

Product Name   Package Quantity per Reel
R1293Kxx1A-E2 Consumter QFN(PLP)0404-32 2,000
  • xx … Designation of the LDO output voltage (VOUT)
    VOUT can be set within the range of 1.8 V to 2.5 V in 0.1 V steps.

DOCUMENT/CONTACT

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Technical Support

Package *1 Marking Reliability *2
QFN(PLP)0404-32 R1293K R1293K

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.

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