AP2007
General Description
The AP2007 is a compact, high-efficiency,
synchronous step-up converter with power Mosfets
embedded and with output turn off true shutdown
function for a single-cell Li-ion/polymer battery. The
AP2007 uses only 70μA (typ) quiescent current and
allows the converter to switch only when needed at no
load and light loads, and when load is higher than
150mA, it uses fixed-frequency PWM technique at
1MHz. It features a current mode control for fast
transient response with internal compensation. The
AP2007 includes cycle-by-cycle current limit to
maximum inductor current and over-temperature
protection circuit. The AP2007 is suitable for iPad-like
computers, smart phones and portable handheld
devices.
The AP2007 is available in a SOP8-PP package. The
operating temperature range is from -45°C to +85°C.
Chipown
Sync. Rectifier Step Up Converter
Low 70μA Quiescent Current
Guaranteed 2A Output Current at VOUT = 5V
from 3.3V Input
1MHz PWM Switching Frequency
Synchronous and Embedded Power Mosfets
No Schottky Diode Required
Internal Soft-Start to Limit Inrush Current
Adjustable Output
Output turn off true shutdown function
Current Mode Operation with Internal
Compensation
For Excellent Line and Load Transient Response
Overload/Short-Circuit Protection
Shutdown Current <1μA
Thermal Shutdown
Compact 8 pin,SOP8-PP package
Package
SOP8-PP
Applications
iPad-like computers, smart phones and portable
handheld devices.
Features
Up to 90% Efficiency at Iout=2A VOUT = 5V from
3.6V Input
Typical Application Circuit
η VS IO（FIB-1#）
100
90
80
70
η(%)
60
50
40
VIN=2.5V
Vin=3.0V
Vin=3.6V
VIN=4.2V
0
200
400
600
800
1000
1200
IO(mA)
1400
1600
1800
2000
30
Figure 1. Basic Application Circuit with AP2007
Figure 2. Typical Efficiency Curve
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi
Tel: +86(510)85217718
http://www.chipown.com.cn
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AP2007
Pin Description
Pin
No.
1,2
3
4
5
6
7,8
Pin
Name
LX
VIN
EN
GND
FB
VOUT
EP
Pin Function
Inductor Node.
IC Power Supply Input.
Chipown
Enable pin for the IC. Drive this pin high to enable the part, low to disable.
IC Analog Ground.
Converter Feedback Input.
Converter Output.
Exposed Paddle. Connect to the ground plane to optimize thermal performance. EP is
internally connected to GND. EP must be connected to GND at a single point with a star
ground connection.
Functional Block Diagram
Figure 3. AP2007 Block Diagram
Absolute Maximum Rating
(Note 1)
Input Supply Voltage……………………………………………………….……………………………….-0.3V to +6V
LX Voltage…………………………………………………………………………………………..…...…-0.3V to +6V
VOUT Voltages………………………………………………………………...……………………..........-0.3V to +6V
FB Voltages………………………………………………………………...……………………................-0.3V to +6V
VIN Voltages………………………………………………………………...……………………..............-0.3V to +6V
EN Voltages………………………………………………...…………………...…………………….........-0.3V to +6V
Package Thermal Resistance
Ө
..............................................................................................................................................................50°C/W
Ө
..............................................................................................................................................................10°C/W
JC
JA
(Note 2)
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi
Tel: +86(510)85217718
http://www.chipown.com.cn
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AP2007
Chipown
Operating Temperature Range…………………………………….…………………………………….-40°C to +85°C
Storage Temperature Range……………………………………………………………………………-65°C to +150°C
Lead Temperature (Soldering, 10s)………………………………………………………………………………+260°C
Electrical Characteristics
(Note 3)
(VOUT=5V, VIN = 3.6V, T
A
= 25°C, Test Circuit of Figure 1,unless otherwise noted.)
Parameter
Input operation voltage
Output voltage
Input Quiescent current
Shutdown supply current
Switching Frequency
Soft-Start Interval
FB Regulation Voltage
FB Input Current
Maximum Duty Cycle
VOUT Leakage Current
LX Leakage Current
Symbol
VIN
VOUT
IIN
IIN
Fosc
SS
VFB
IFB
Dmax
FB=1.0V
FB=0.95V
86
93
1
1
52
49
5
EN=1,VIN=3V, VOUT=5V, IOUT=2A
Rising Edge, 20°C hysteresis
Vih_EN
Vil_EN
Rin_EN
1.5
0
200
250
87
150
5.5
0.5
300
1.208
Line and Load Regulation in CCM
(IL>100mA) VIN=2.5V~4.5V
VIN =3.6V FB=1.28V
No load, no switching
(exclude input current from EN)
EN=0
0.7
Test Conditions
Min
2.5
4.925
5
50
0.1
1
0.2
1.227
1.246
100
96
5
5
70
65
Typ
Max
5
5.075
70
1
1.3
Unit
V
V
uA
uA
MHz
ms
V
nA
%
uA
uA
mΩ
mΩ
A
%
°C
V
V
kΩ
IPVOUT_LK EN=0 , VOUT=5V
ILX_LK
RON-N
EN=0 , VOUT=5V
Switch ON Resistance
RON-P
Peak Current Limit
Efficiency
Thermal Shutdown
Threshold
EN Input High Level
EN Input Low Level
EN Internal Pull-Low
Resistance
I_LIM
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
Note 2:
Thermal Resistance is specified with approximately 1 square of 1oz copper.
Note 3:100%
production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi
Tel: +86(510)85217718
http://www.chipown.com.cn
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AP2007
Typical Performance Characteristics
Operation
(CH1=VIN,CH2=VO,CH3=LX,CH4=ILX)
IO=0
IO=2A
Chipown
Start Up
(CH1=EN,CH2=VO,CH3=LX,CH4=ILX)
IO=0
IO=0.5A
Over Current
(CH1=LX,CH2=VO,CH4=ILX)
Short Circuit(CH1=LX,CH2=VO,CH4=ILX)
Load Transient Response
(CH2=VO,CH4=IO)
IO=0.2-1.5A
IO=0.2-2A
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi
Tel: +86(510)85217718
http://www.chipown.com.cn
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AP2007
Ordering Information
Part number
AP2007SPER
1.YYWW=date code
P= Package factory
Mark
AP2007
YYWWP
1
Chipown
Package
SOP8-PP
Operation
The AP2007 current-mode step-up DC-DC switching
converter uses a fixed-frequency PWM architecture
with output shutdown. In light-load mode, the
converter switches when needed, consuming only
70μA of quiescent current. In heavy-load mode of
higher than 150mA, the converter switches every cycle
at a constant frequency as fixed-PWM, thus enabling
noise filtering. The AP2007 is highly efficient, with
internal and synchronous switches. Shutdown reduces
the quiescent current to less than 0.1μA. Low quiescent
current and high efficiency make this device ideal for
portable equipment.
The AP2007 step-up DC-DC switching converter
typically generates a 5V output voltage from a single-
cell battery input voltage. The minimum output peak
current limit is 5A in SOP8-PP package. When an
over-current, short-circuit or thermal shutdown
condition is encountered. The converter will turn off
until the over-current or over-temperature condition is
removed. The AP2007 is adjustable by 2 external
resistors with calculating the value for R1 as R1 = R2
(VOUT/VFB - 1).
The AP2007 switches at a 1MHz frequency, allowing
for tiny external components. The AP2007 is optimized
for use in iPad-like computers, smart phones, portable
handheld devices and other applications requiring low
quiescent current for maximum battery life.
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi
Tel: +86(510)85217718
http://www.chipown.com.cn
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