EV1531DQ-002A Datasheet, PDF (5/5 Pages) Monolithic Power Systems – Low Power, Triple Output Step-Up Plus Charge Pump for TFT Bias

EV1531DQ-002A – LOW PWR, TRI-OUTPUT STEP-UP + CHARGE PUMP FOR TFT BIAS
EVALUATION BOARD – INITIAL RELEASE
TEST RESULTS
Power-Up Sequencing
Efficiency vs Load Current
Delivered by Step-Up Converter
Load Transient
V_IN = 3.3V, V_MAIN = 5V, 5mA-50mA STEP
V_GH = 15V, I_GH = 5mA, V_GL = -10V, I_GL = 5mA
V_IN = 3.3V, V_MAIN = 5V, I_MAIN = 100mA,
V_GH = 15V, I_GH = 5mA, V_GL = -10V, I_GL = 5mA,
C_CT=10nF
100
V_IN = 4.2V
90
80
V_IN = 3.3V
70
V_MAIN
50mV/div
V_EN
5V/div
60
50
40
30
20
0
V_MAIN = 5V
I_MAIN
50mA/div
100 200 300 400 500 600
LOAD CURRENT (mA)
MP1531-TPC01
V_MAIN
5V/div
V_GH
10V/div
V_GL
10V/div
MP1531_WF01
10ms/div
MP1531_WF02
QUICK START GUIDE
The three output voltages of this board are set to +5V, +15V, and -10V. The board layout
accommodates most commonly used inductors and output capacitors.
1. Make sure Jumper JP1 is connected between 2 and 3.
2. Attach positive end of loads to VMAIN, VGH,and VGL pins respectively. Attach negative end of
loads to GND pins.
3. Attach input voltage 2.7V ≤ V_IN ≤ 5.5V and input ground to VIN and GND pins respectively.
4. During startup RDY will be left HIGH. Once the turn-on sequence is complete, this pin will be
pulled low if all regulators exceed 80% of their specified voltages. After all regulators are turned
on, a fault in any regulator will cause RDY to go LOW after approximately 15µs. If the fault
persists for more than approximately 6ms (for C_CT = 10nF), the entire chip will shut down.
NOTICE: MPS believes the information in this document to be accurate and reliable. However, it is subject to change without
notice. Contact MPS for current specifications. MPS encourages users of its products to ensure that third party Intellectual
Property rights are not infringed upon when integrating MPS products into any application. MPS cannot assume any legal
responsibility for any said applications.
EV1531DQ-002A Rev. 1.1
Monolithic Power Systems, Inc.
5
10/13/04
983 University Avenue, Building A, Los Gatos, CA 95032 USA
© 2004 MPS, Inc.
Tel: [phone] ♦ Fax: [phone] ♦ www.MonolithicPower.com