参数资料
型号: MP1531DQ-LF-Z
厂商: MONOLITHIC POWER SYSTEMS INC
元件分类: 稳压器
英文描述: 0.65 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, QCC16
封装: 3 X 3 MM, ROHS COMPLIANT, MO-220VEED-4, QFN-16
文件页数: 6/12页
文件大小: 287K
代理商: MP1531DQ-LF-Z
MP1531 – LOW POWER, TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS
MP1531 Rev. 1.3
www.MonolithicPower.com
3
12/4/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
(4) (continued)
VIN = 5.0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Oscillator
Switching Frequency
fSW
200
250
300
KHz
Maximum Duty Cycle
DM
85
90
%
Soft-Start Period
C4 = 10nF
6
ms
Turn-Off Delay
3
μs
Error Amplifier
Error Amplifier Voltage Gain
AvEA
400
V/V
Error Amplifier Transconductance
GmEA
1000
μA/V
COMP Maximum Output Current
±100
μA
FB1, FB3 Regulation Voltage
1.22
1.25
1.28
V
FB2 Regulation Voltage
–25
0
+25
mV
FB1, FB3 Input Bias Current
VFB1 = VFB3 = 1.25V
±100
nA
FB2 Input Bias Current
VFB2 = 0V
±100
nA
Reference (REF)
REF Regulation Voltage
IREF = 50μA
1.22
1.25
1.28
V
REF Load Regulation
0μA < IREF < 200μA
1
1.2
%
Output Switch (SW)
VIN = 5V
250
m
SW On Resistance
VIN = 3V
400
m
SW Current Limit
ILIM
0.5
0.65
A
SW Leakage Current
VSW = 22V
0.5
1
A
GL Dropout Voltage
(5)
VGL = –10V, IGL = 10mA
0.15
V
GH Dropout Voltage
(5)
VGH = 20V, IGH = 10mA
0.5
V
GL Leakage Current
VIN2 = –15V, VGL = GND
1
A
GH Leakage Current
VIN3 = 25V, VGH = GND
1
A
Thermal Shutdown
160
°C
Notes:
4) Typical values are guaranteed by design, not production tested.
5) Dropout voltage is the input to output differential at which the circuit ceases to regulate against further reduction in input voltage.
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit of Figure 3, unless otherwise noted.
100
90
80
70
60
50
40
30
20
EFFICIENCY
(%)
0
100 200 300 400 500 600
LOAD CURRENT (mA)
Efficiency vs Load Current
Delivered by Step-Up Converter
VIN = 3.3V
VMAIN = 5V
VIN = 4.2V
Power-Up Sequencing
VIN =3.3V,VMAIN =5V,IMAIN =100mA,
VGH =15V,IGH =5mA,VGL =-10V,
IGL =5mA
IMAIN
50mA/div
VMAIN
50mV/div
VEN
5V/div
Load Transient
VIN = 3.3V, VMAIN = 5V,
5mA-50mA Step, VGH = 15V,
IGH = 5mA, VGL = -10V, IGL = 5mA
VMAIN
5V/div
VGH
10V/div
VGL
10V/div
10ms/div
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