ACE701 Datasheet, PDF (1/13 Pages) ACE Technology Co., LTD. – PFM STEP-UP DC/DC Converter with High Efficiency and Low Noise

ACE701
Technology 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 5.5uA. 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.
ACE701 is available in SOT-89-3、SOT-23-3、SOT-89-5 and SOT-23-5 packages which is PB free. And
in 5-pin packages, such as SOT-23-5 and SOT-89-5, the device can be switch on or off easily by CE pin,
to minimize the standby supply current.
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 2.5V～6.0V(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
Symbol Max Unit
Input supply voltage
Input voltage
CE pin voltage
VIN
-0.3~12 V
V_I(LX) -0.3~Vout+0.3 V
-0.3~Vout+0.3
Lx pin output current
Power Dissipation
SOT-89-3
SOT-23-5
SOT-23-3
Junction temperature
TJ
Storage temperature
TS
Operating free-air temperature
0.7
A
0.5
0.15
W
0.15
150
O_C
- 40 to 125 ^OC
-20 ~ 80 ^OC
VER 1.2 1