A7501E3VR-27 [AITSEMI]
DC-DC CONVERTER/BOOST STEP-UP SWITCHING REGULATOR;
| 型号： | A7501E3VR-27 |
| 厂家： | 
AiT Semiconductor |
| 描述： | DC-DC CONVERTER/BOOST STEP-UP SWITCHING REGULATOR DC-DC转换器 开关 |
| 文件： | 总12页 (文件大小：386K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
DESCRIPTION
FEATURES
The A7501 Series is a CMOS VFM-control step-up
switching regulator that mainly consists of a reference
voltage source, an oscillator, and a comparator.
Enabling products with a low ripple over a wide
range, high efficiency, and high output current.
Products with a fixed duty ratio of 75 %（Lower Output
Voltage）or 88%(Higher Output Voltage) are also
available. With the A7501 Series, a step-up switching
regulator can be configured by using an external coil,
capacitor, and diode. A protection circuit turns off the
built-in MOSFET when the voltage at the CONT pin
exceeds the limit to prevent it from being damaged.
This feature, along with the mini package and low
current consumption, makes the A7501 Series ideal
for applications such as the power supply unit of
portable equipment.
Low voltage operation: Start up at 0.9V min
(IOUT=1mA) guaranteed
Low input current: During maximum operation:
18μA (VOUT=3.3V, typ.)
Duty ratio: 77% Built-in fixed-type PFM
controller
External parts: Coil, capacitor, and diode
Output voltage: Settable to between
2.5V to 5.5V , accuracy of 2%
Available in SOT-89-3 and SOT-23 Packages
APPLICATION
Power supply for portable equipment such as
digital cameras, electronic notebooks, and PDA
Power supply for audio equipment such as
portable CD/MD players
Constant voltage power supply for cameras,
video equipment and communications
equipment
A7501 is available in SOT-89-3 and SOT-23
packages.
Power supply for microcomputers
TYPICAL APPLICATION CIRCUIT
ORDER INFORMATION
Package Type
SOT-89-3
Part Number
A7501K3R-XX
A7501K3VR-XX
A7501E3R-XX
A7501E3VR-XX
K3
E3
SOT-23
XX: Output Voltage,
27=2.7V, 30=3.0V,
Note
R: Tape & Reel
V: Halogen free Package
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
Components Normal Value: C1=10uF, C2=47uF,
L=22uH, D1 1N5818
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 1 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
PIN DESCRIPTION
Top View
Top View
Function
Pin #
Symbol
SOT89-3
SOT-23
1
2
3
1
3
2
VSS
VOUT
LX
Ground
Output
External Coil Connection
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 2 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
ABSOLUTE MAXIMUM RATINGS
VDD, Input Voltage
VOUT, Output Voltage
VCONT, Output Voltage
ILX, Output Current
VSS -0.3V～VSS+6.5V
VSS-0.3V～VSS+6.5V
VSS-0.3V～VSS+6.5V
1000mA
SOT-89-3
SOT-23
500mW
PD, Power Dissipation
150mW
TOPR, Operating Ambient Temperature
TSTG, Storage Ambient Temperature
-40℃～＋80℃
-40℃～＋125℃
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 3 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
ELECTRICAL CHARACTERISTICS
TA=25℃, VIN=1.5V，VOUT=3.3V, unless otherwise noted
Min.
Typ.
Max.
Test
Parameter
Symbol
Conditions
Unit
V
circuit
VOUT(S)
×0.98
-
VOUT(S)
×1.02
6.5
Output Voltage
VOUT
VIN
VOUT(S)
Input Voltage
Operation Start
Voltage
-
-
1
2
1
VST1
IOUT=1mA
-
-
-
1.1
25
7
V
OUT＝Output
voltage×0.9
VOUT＝Output
Active Current
IACT
20
uA
%
Input Current Without
Load
ISS
4.5
voltage×1.1
Line Regulation
Load Regulation
Output Voltage
Temperature
ΔVOUT1
ΔVOUT2
IOUT=30mA
-
-
0.22
0.35
0.4
0.5
IOUT=10uA~100mA
ΔVOUT1
ppm/
TA=-40℃～＋85℃
-
±40
120
-
℃
ΔTA× VOUT
Coefficient
Maximum Oscillation
Frequency
V
OUT＝Output
voltage×0.95
OUT＝Output
voltage×0.95
fosc
90
150
KHz
2
1
V
Duty Ratio
Efficiency
Duty
EFFI
70
-
77
88
84
-
%
％
NOTE: VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. fOSC is the working
frequency.
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 4 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
1.
3.
5.
Input Voltage vs. Power Supply
Temperature vs. Active Current
Temperature vs. Input Current
2.
4.
6.
Output Voltage vs. Current Consumption(TA=25℃)
Output Voltage vs. Input Current (TA=25℃)
Output Voltage vs. Switching Current (TA=25℃)
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 5 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
7.
Temperature vs. Switching Current
8.
Temperature vs. Operation Start Voltage
9.
Output Current vs. Output Voltage
10. Output Current vs. Efficiency
11. Power Supply Voltage Fluctuation (TA=25℃, RL=250Ω)
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 6 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
12. Load Current Fluctuation (TA=25℃)
13. 13. Power On
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 7 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
TEST CIRCUITS
Test circuits 1
Test circuits 2
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 8 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
BLOCK DIAGRAM
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 9 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
PACKAGE INFORMATION
Dimension in SOT-89-3 (Unit: mm)
Symbol
Min
Max
A
b
1.400
0.320
0.400
0.350
4.400
1.600
0.520
0.580
0.440
4.600
b1
c
D
D1
E
1.550 REF
2.300
3.940
2.600
4.250
E1
e
1.500 TYP
3.000 TYP
e1
L
0.900
1.200
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 10 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
Dimension in SOT-23 Package (Unit: mm)
SYMBOL
MIN
MAX
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
c
D
E
E1
e
0.950(BSC)
e1
L
1.800
0.300
0°
2.000
0.600
8°
θ
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 11 -
A7501
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer.
As used herein may
In order to
involve potential risks of death, personal injury, or servere property, or environmental damage.
minimize risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 12 -
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