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ACE701CA45.9VBNH [ACE]

Small Package PFM Control Step-Up DC/DC Converter;
ACE701CA45.9VBNH
型号： ACE701CA45.9VBNH
厂家： ACE TECHNOLOGY CO., LTD.    ACE TECHNOLOGY CO., LTD.
描述：

Small Package PFM Control Step-Up DC/DC Converter
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ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Description  
The ACE701CA Series is a CMOS PFM-control step-up switching DC/DC converter. The PFM  
controller allows the duty ratio to be automatically switched according to the load (light load: 66%, high  
output current: 78%), enabling products with a low ripple over a wide range, high efficiency, and high  
output current. With the ACE701CA Series, a step-up switching DC/DC converter can be configured by  
using an external coil, capacitor, and diode. The built-in MOSFET is turned off by a protection circuit when  
the voltage at the LX pin exceeds the limit to prevent it from being damaged. This feature, along with the  
mini package and low current consumption, makes the ACE701CA Series ideal for applications such as  
the power supply unit of portable equipment.  
Features  
Low voltage operation: Startup at 0.9 V min. (IOUT = 1 mA) guaranteed  
Duty ratio: 66/78%, built in auto switching type PFM controller  
External parts: Coil, capacitor, diode  
Output voltage: Settable to between 1.8V to 6.0 V in 0.1 V steps  
Accuracy of ±2%  
High efficiency：±85%（typ.）  
Standard function (product typeA)  
Shutdown function (product type C,D)  
External transistor type available (product type B、D)  
Application  
Digital cameras  
Electronic notebooks and PDAs  
Portable CD/MD players  
Cameras, video equipment  
Communications equipment  
Power supply for microcomputers  
Absolute Maximum Ratings  
Parameter  
Symbol  
VOUT  
EN  
Max  
VSS-0.3 ~ VSS+8  
VSS-0.3 ~ VSS+8  
VSS-0.3 ~ VSS+8  
1000  
Unit  
V
VOUT pin voltage  
EN pin voltage  
V
LX pin voltage  
VLX  
V
LX pin current  
ILX  
mA  
mW  
mW  
SOT-23-3  
250  
SOT-23-5  
SOT-89-3  
TO-92  
250  
Power dissipation  
PD  
mW  
mW  
℃
500  
500  
Operating temperature  
Topr  
Tstg  
-40 ~+85  
-40 ~+125  
260°C, 10s  
Storage temperature  
℃
Soldering Temperature & Time  
Tsolder  
VER 1.2  
1
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Packaging Type  
SOT-23-3  
SOT-23-5  
SOT-89-3  
SOT-89-5  
TO-92  
Pin Configuration  
SOT-23-3 SOT-23-5 SOT-89-3 SOT-89-5 TO-92 Description  
Function  
VOUT  
VSS  
1
2
2
4
2
1
2
5
2
1
Output voltage pin  
GND pin  
External inductor connection  
pin  
3
5
3
4
3
LX/EXT  
Shutdown pin  
1
3
3
1
EN  
NC  
“H”: Normal operation  
“L”: Step-up stopped  
No connection  
Ordering information  
ACE701CA X XX XX + H  
Halogen - free  
Pb - free  
BM: SOT-23-3  
BN: SOT-23-5  
AM: SOT-89-3  
AN: SOT-89-5  
EP: TO-92  
Output Voltage: 1.8V/1.9V/……/5.9V/6.0V  
Function Description:  
1: Internal Tr. Driver, Without Enable circuit  
2: Internal Tr. Driver, With Enable circuit  
3: External Tr. Driver, Without Enable circuit  
4: External Tr. Driver, With Enable circuit  
VER 1.2  
2
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Block Diagram  
VER 1.2  
3
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Electrical Characteristics  
Parameter  
Symbol  
Test Conditions  
Min  
Typ  
Max  
Unit  
VOUT(S  
)×0.98  
VOUT(S)  
×1.02  
Output voltage  
VOUT  
VOUT  
V
Input voltage  
VIN  
6
V
V
Operation start voltage  
VST1  
IOUT= 1 mA  
0.9  
No external parts, voltage  
applied to VOUT LX pulled up  
to VOUT via 300Ω resistor  
Oscillation start voltage  
VST2  
0.8  
V
uA  
V
OUT：3.0V  
20  
40  
V
OUT=0.95  
×VOUT  
Current consumption 1  
Current consumption 2  
ISS1  
V
OUT：5.0V  
30  
6
60  
10  
uA  
uA  
ISS2  
ISSS  
ISW  
VOUT=VOUT＋0.5 V  
VEN = 0 V  
Current consumption  
during shutdown  
1.0  
mA  
uA  
uA  
Switching current  
VLX= 0.4 V  
100  
200  
Switching transistor  
leakage current  
Line regulation  
No external parts, VLX＝VOUT  
=8 V ,VEN = 0 V  
ISWQ  
1.0  
∆VOUT1  
∆VOUT2  
VIN= 0.4×VOUT～0.6×VOUT  
20  
20  
50  
50  
mV  
mV  
Load regulation  
Maximum Oscillation  
frequency  
IOUT= 10 µA ~ 50mA  
V
OUT= 0.95×VOUT， measure  
fosc  
100  
Khz  
waveform at LX pin  
VOUT= 0.95×VOUT  
，
Duty ratio 1  
Duty1  
measure waveform at  
LX pin  
70  
78  
85  
%
Measure waveform at  
LX pin with light load  
Duty ratio 2  
Efficiency  
Duty2  
EFFI  
VSH  
66  
85  
%
%
V
V
OUT=0.95×VOUT， judge  
oscillation at LX pin  
0.75  
Shutdown pin input  
voltage  
VOUT= 0.95×VOUT  
，
VSL1  
0.3  
V
judge stop at LX pin  
VEN＝6V  
ISH  
ISL  
-0.1  
-0.1  
0.1  
0.1  
uA  
uA  
Shutdown pin input  
current  
VEN＝0V  
Remark：  
VIN =VOUT(S)×0.6 applied, IOUT=VOUT(S) / 250 Ω  
Shutdown function built-in type: EN pin is connected to VOUT  
ST1 only is suitable for ACE701CAA/C  
VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage.  
V
VER 1.2  
4
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Standard Circuits  
Component: Inductor：47uH(Sumida)  
Diode：IN5817、IN5819  
Capacitor：47uF/16V(Tantalum)  
NMOS：ACE7400  
Transistor：2SD1628G、2SD3279  
Base Resistor(Rb)：1K Ω  
1、 ACE701CA-1 Circuits：  
2、ACE701CA-2 Circuits：  
3、ACE701CA-3 Circuits：  
4、ACE701CA-4 Circuits  
VER 1.2  
5
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Typical Performance Characteristics  
1. ACE701CA-1  
Vout:3V  
Circuits  
1
Vout:3.3V  
2. ACE701CA-  
Circuits  
VER 1.2  
6
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
3. ACE701CA 1  
-
Vout:5V  
Circuits  
Vout:3.6V  
4. ACE701CA-3  
Circuits  
5. ACE701CA  
-3  
Vout:5V  
Circuits  
VER 1.2  
7
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Packing Information  
SOT-23-3  
VER 1.2  
8
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Packing Information  
SOT-23-5  
VER 1.2  
9
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Packing Information  
SOT-89-3  
VER 1.2 10  
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Packing Information  
SOT-89-5  
VER 1.2 11  
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Packing Information  
TO-92  
VER 1.2 12  
ACE701CA  
Small Package PFM Control Step-Up DC/DC Converter  
Notes  
ACE does not assume any responsibility for use as critical components in life support devices or systems  
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.  
As sued herein:  
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant  
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in  
accordance with instructions for use provided in the labeling, can be reasonably expected to result in  
a significant injury to the user.  
2. A critical component is any component of a life support device or system whose failure to perform can  
be reasonably expected to cause the failure of the life support device or system, or to affect its safety  
or effectiveness.  
ACE Technology Co., LTD.  
http://www.ace-ele.com/  
VER 1.2 13  

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