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PDF EUP2512JIR1 Data sheet ( Hoja de datos )
| Número de pieza | EUP2512JIR1 | |
| Descripción | Dual Channel DC-DC Converter | |
| Fabricantes | Eutech Microelectronics | |
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EUP2512
Dual Channel DC-DC Converter for AMOLED
DESCRIPTION
The EUP2512 generates power supply rails for active-matrix
organic light emitting diode (AMOLED) displays. It includes
a step-up DC-DC and an inverting DC-DC converter making
it suitable for battery operated products.
The step-up converter is a high-accuracy power-efficiency
250mA output regulator. It features an internal 0.5Ω
N-MOSFET, 0.6Ω P-MOSFET and 1.4MHz operation
frequency allowing the use of small inductor and capacitors.
The integrated synchronous rectifier allows the true
shutdown of the outputs. An internal digital soft-start
function controls inrush currents. The step-up converter
output can be externally set 4V to 8V.
The inverting converter is a high-accuracy 250mA regulator.
It features an internal 0.4Ω N-MOSFET, 0.5Ω P-MOSFET
and 1.4MHz operation frequency allowing the use of small
inductor and capacitors. Its -6V to -1V output efficiency up
to 80% at 150mA. An internal digital soft-start function
controls inrush currents.
The EUP2512 is available in a small (3mm × 3mm × 0.6mm)
12 pin thin TDFN package and operates over the -40ºC to
+85ºC temperature range.
FEATURES
2.5V to 4.5V Input Supply Range
1.4MHz Current Mode Step Up Regulator
- External Programmable 4V~8V Output Voltage
- Maximum 250mA Output
- High Accuracy (+/- 1%)
- Built-In 18V, 0.5Ω N-MOSFET
- Built-In 18V, 0.6Ω P-MOSFET
Synchronous Rectifier
- Cycle-by-Cycle Current Limit
- More than 85% Efficiency at 150mA
- Good Low-Duty Factor Operation
1.4MHz Current Mode Inverting Regulator
- -6V to -1V
- Maximum 250mA Output
- High Accuracy (+/- 1%)
- Built-In 18V, 0.5Ω P-MOSFET
- Built-In 18V, 0.4Ω N-MOSFET
Synchronous Rectifier
- Cycle-by-Cycle Current Limit
- Up to 80% Efficiency at 150mA
True Shutdown Mode for Dual Outputs
Timer-Delayed Output Under-Voltage Shutdown for
Dual Outputs
Over Temperature Protection
12 Pin 3mm × 3mm thin TDFN Package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
OLED Displays
Phone, DSC Display
Automobile Navigation
DS2512 Ver1.0 Mar. 2011
1
1 page  
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
EUP2512
Absolute Maximum Ratings
DC Supply Voltage (VINA,VINP) --------------------------------------------------- -0.3V to 6V
ENABLE Pin (EN) --------------------------------------------------------------------- -0.3V to 6V
Inverting Regulator’s Switching Current (ILX2) ------------------------------- Internally limited
Inverting Regulator Switch Node (LX2) ---------------------------------------- -6V to VINP+0.3V
Inverting Regulator Output Voltage(VO2) ------------------------------------- -6V to GND +0.3V
Step-up Regulator Switch Node (VO1) ------------------------------------------------
8V
Step-up Regulator Output Voltage (LX1) ----------------------------------------------
8V
Step-up Regulator’s Switching Current (ILX1) ---------------------------------- Internal Limited
Reference Output Voltage(VREF) ----------------------------------------------------- -0.3V to 6V
Step-up Regulator Feedback Input (FB1) --------------------------------------------- -0.3V to 6V
Inverting Regulator Feedback Input (FB2) ------------------------------------------- -0.3V to 6V
Thermal Resistance
θJA (TDFN-12) ---------------------------------------------------------------------------- 70°C /W
Storage Temperature (TST) ------------------------------------------------------ -60°C to +150°C
Maximum Junction Temperature -------------------------------------------------------
150°C
Recommended Operating Conditions
Supply Voltage (VIN) -------------------------------------------------------------- 2.5V to 4.5V
Operating Temperature (TA) ----------------------------------------------------- -40°C to +85°C
Electrical Characteristics
TA=25°C, VINA=VINP=3.7V, IO1,2=30mA, CI=4.7µF, CO1,2=4.7µF, CREF=1µF, L1=4.7µH, L2=4.7µH, VEN=VINA=VINP,
VO1=6V, VO2=-2V unless otherwise specified.
Symbol
Parameter
Conditions
EUP2512
Unit
Min. Typ. Max.
General Section
VIN
UVLO_H
UVLO_L
Operating input voltage
range
Under voltage lockout
HIGH
Under voltage lockout
LOW
I_VI Input current
IS
VENH
VENL
IEN
FSW
D1MAX
D2MAX
v
VREF
IREF
VO1
Shutdown current
Enable high threshold
Enable low threshold
Enable input current
Frequency
Step-up maximum duty
cycle
Inverting maximum
duty cycle
Total system efficiency
Voltage reference
Voltage reference
current capability
Positive Output Setting
Range
VO1=4.6V, TJ=-40 to 85°C
VINA rising, TJ=-40 to 85°C
VINA falling, TJ=-40 to 85°C
No load condition (I_VI=IINP+IINA),
VO1=6V, VO2=-2V
VEN=GND, (IS=IINP+IINA)
VINA=2.5V to 4.5V, TJ=-40 to 85°C
VINA=2.5V to 4.5V, TJ=-40 to 85°C
VEN=VI
PWM mode, TJ=-40 to 85°C
IO1,2=150mA, VO1=6V, VO2=-2V
IREF=10µA
At VREF=VREF-1.5%
VINA=2.5V to 4.5V, IO1=5mA to 100mA
2.5 4.5 V
2.40 2.50 V
2.10 2.20
V
2 mA
5 µA
1
V
0.4
1 µA
1.1 1.4 1.7 MHz
90 %
1.196
100
90
84
1.209
1.222
%
%
V
µA
4 8V
DS2512 Ver1.0 Mar. 2011
5
5 Page 
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
EUP2512
Typical Operating Characteristics (continued)
Step-up Line Transient Response (3 to 3.5V)
IO1=100mA IO2=0
Inverting Line Transient Response (3 to 3.5V)
IO1=0 IO2=100mA
VIN
1V/div
VO1
50mV/div
VIN
1V/div
VO1
50mV/div
200µs /div
Step-up Load Transient Response
IO1=3 to 30mA IO2=0
200µs /div
Step-up Load Transient Response
IO1=10 to 100mA IO2=0
VO1
50mV/div
VO1
100mV/div
100µs/div
Inverting Load Transient Response
IO1=0 IO2=3 to30mA
IO1
10mA/div
100µs/div
Inverting Load Transient Response
IO1=0 IO2=10 to100mA
IO1
10mA/div
VO2
50mV/div
VO2
50mV/div
100µs/div
DS2512 Ver1.0 Mar. 2011
IO2
10mA/div
11
100µs/div
IO2
50mA/div
11 Page | ||
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| PDF Descargar | [ Datasheet EUP2512JIR1.PDF ] | |
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