HT9261 datasheet(1/13 Pages) HOTCHIP

tên linh kiện	HT9261

Giải thích chi tiết về linh kiện	Deliver 200mA at 3.3V Output voltage with 1.8V input Voltage

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PFM STEP-UP DC/DC CONVERTER WITH HIGH EFFICIENCY AND LOW NOISE

HT9261(A)

第 1 页共 13 页

OUTLINE

The HT9261 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 HT9261 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, HT9261 is well considerated in circuit

design and manufacture, so that the interferer

to other circuits by the device is reduced

greatly.

HT9261 integrates stable reference circuits

and trimming technology, so it can afford high

precision and low temperature-drift coefficient

of the output voltage.

HT9261 is available in SOT-89-3、SOT-23-3

and SOT-23-5 packages which is PB free. And

in 5-pin packages, such as SOT-23-5, 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---------- <7uA

APPLICATIONS

 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

Số phần tương tự - HT9261

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