ACE701
PFM STEP-UP DC/DC Converter with High Efficiency and Low Noise
Description
The ACE701 series are CMOS-based PFM step-up DC-DC Converter. The converter can start up by
supply voltage as low as 0.8V, and capable of delivering maximum 200mA output current at 3.3V output
with 1.8V input Voltage. Quiescent current drawn from power source is as low as 7uA. All of these
features make ACE701 series be suitable for the portable devices, which are supplied by a single battery
to four-cell batteries.
To reduce the noise caused by the switch regulator, ACE701 is well considerated in circuit design and
manufacture. So that the interferer to other circuits by the device is reduced greatly.
ACE701 integrates stable reference circuits and trimming technology, so it can afford high precision and
low temperature-drift coefficient of the output voltage.
Features
Deliver 200mA at 3.3V Output voltage with 1.8V input Voltage
Low start-up voltage (when the output current is 1mA) 0.8V
The converter output voltage can be adjusted from 2.5V½6.0V(In 0.1V step)
Output voltage accuracy
2%
Low temperature-drift coefficient of the output voltage
100ppm/℃
Only three external components are necessary: An inductor, a Schottky diode and an output filter
capacitor
High power conversion efficiency 85%
Low quiescent current drawn from power source <5.5uA
Application
Power source for PDA. DSC. MP3 Player. electronic toy and wireless mouse
Power source for a single or dual-cell battery-powered equipments
Power source for LED
Absolute Maximum Ratings
Parameter
Input supply voltage
Input voltage
CE pin voltage
Lx pin output current
Power Dissipation
SOT-89-3
SOT-23-5
Operating Junction temperature
Storage temperature
Ambient Temperature
Symbol
V
IN
V
I(LX)
Max
-0.3~12
-0.3~Vout+0.3
0.7
500
250
125
- 40 to 150
-40 to 85
A
mW
O
O
O
Unit
V
-0.3~Vout+0.3 V
T
J
T
S
T
A
C
C
C
VER 1.5
1