AT1310 [AIMTRON]

MicroPower Charge Pump Converter; 微功耗电荷泵转换器


型号：	AT1310
厂家：	AIMTRON TECHNOLOGY
描述：	MicroPower Charge Pump Converter 微功耗电荷泵转换器转换器调节器电容器泵
文件：	总11页 (文件大小：691K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Features

General Description

• Step-Up type Charge Pump

• Input Range 2.7V to 5V

The AT1310 is a MicroPower switched-capacitor

voltage converter that delivers a regulated output.

No external inductor is required for operation.

Using three small capacitors, the AT1310 can

deliver up to 100mA to the regulated output. The

AT1310 features very low quiescent current and

high frequency over a large portion of its load

range making this device ideal for battery-powered

applications.

• Low input current 25µA

• High Output Voltage Accuracy ±4%

• 100mA output current with VIN≥3.0V

50mA output current with VIN≥2.7V

• High Frequency 750KHz operation

• SOT-26 Package

Applications

• Cellular Phones

• LED Backlight Driver

• DSC Flash Unit for IGBT trigger Level

Block Diagram

Aimtron reserves the right without notice to change this circuitry and specifications.

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Pin Configuration(or Pin Assignment)

Ordering Information

Part number

AT1310X

AT1310X_PBF

Package

SOT-26

SOT-26, PBF

Marking

Date Code

,Date Code with one bottom line

: Date Code

*For more marking information, contact out sales representative directly

Pin Description

Pin No. Symbol

I/O

Description

OUT

GND

/SHDN

Regulated Output

Ground

Chip Enable Input

Flying Capacitor negative terminal

Input Supply

Flying Capacitor positive terminal

VIN

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Absolute Maximum Ratings*1

(T_a=+25⁰C)

Parameter

Symbol

Condition

Rated Value

Unit

Min.

Max.

Power supply voltage

OUT pin voltage

SHDN pin voltage

Allowable dissipation

Operating temperature

Storage temperature

V_IN

V_OUT

V_SHDN

P_D

T_OP

T_stg

—

6.0

⁰C

—

6.0

150

+85

+125

—

-30

-55

1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. These are stress ratings only, and functional operation of the device at these or any other conditions

beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics

(Ta=+25⁰C)

Values

Typ.

Parameter

Symbol

Condition

Unit

Min.

Max.

Input Voltage

V_IN

V_OUT=5.0V

2.7

5.0

V_OUT

μA

No Load Supply

Current

2.7V< V_IN<5.0V,I_OUT=0mA,

/SHDN=V_IN

V_Start

4.8

5.2

2.7V< V_IN<5.0V ,I_OUT≤50mA

Output Voltage

Shutdown Current

Ripple Current

V_OUT

I_SHDN

V_Ripple

3.0V< V_IN<5.0V ,I_OUT≤100mA

2.7V< V_IN<3.6V ,I_OUT=0mA,

/SHDN=0V

3.6V< V_IN<5.0V ,I_OUT=0mA,

/SHDN=0V

μA

V_IN=3V, I_OUT=50mA

V_IN=3V, I_OUT=100mA

V_IN=3V, I_OUT=50mA

V_IN=2.7V, I_OUT=50mA

Oscillator Free Running

750

Efficency

Frequency

KHz

V_IH

V_IL

I_IH

1.4

/SHDN Input

Threshold

0.3

μA

/SHDN= V_IN

-2

/SHDN Input Current

I_IL

/SHDN= 0V

OUT Turn-ON time

Short-Circuit Current

t_ON

I_SC

V_IN=3V, I_OUT=0mA

V_IN=3V,V_OUT=GND,/SHDN=3V

300

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Typical characteristics :

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Typical Application Schematic

Fig1. Typical Charge Pump Boost Converter Circuit

Fig2. 5V/100mA supply powered from a USB Port

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Fig3. LED Driver from a Li-Ion Battery Source

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Application Information

1. Capacitor Selection

It is very important to select the capacitors C_IN, C_OUTand C_FLYbecause they will affect turn

on time, output ripple and transient performance. Ceramic capacitors offer many advantages

over other tantalum and aluminum electrolytic counterparts. In general, the capacitors can

be used 10µF for C_INand C_OUT, and 1µF for C_FLYunder maximum output load conditions.

Lower values for CIN, COUT and CFLY may be utilized for light load current applications.

Large ceramic capacitors are typically composed of X7R, X5R, Z5U or Y5V dielectric

materials. If Y5V and Z5U are selected for used with the charge pump, the nominal value

should be doubled to compensated for the capacitor tolerance which can vary more than

±50% over operating temperature range. X7R and X5R dielectrics are much more desirable.

The temperature tolerance of X7R dielectric is better than ±15% .

2. Charge Pump Efficiency

The AT1310 is a regulated output voltage charger pump converter. The Efficiency can be

defined as a linear voltage regulator with an effective output voltage that is equal to two

times the input voltage. The expression to define the ideal efficiency can be shown as:

V_OUT× I_OUT

V_IN× 2I_OUT2 ×V_IN

V_OUT

OUT

η =

Refer to the Typical Characteristics section for measured plots of efficiency versus input

voltage and output load current for the given charge pump output voltage options.

3. Layout Guideline

As a general rule for charge pump boost converters, all external capacitors should be located

as closed as possible to the device package with minimum length trace connections. A local

component side ground plane is recommended. If this is not possible due to the layout

limitations, assure good ground connections by the use of large or multiple PCB via’s.

Refer to the following AT1310 evaluation board layout. ( Application Circuit Fig3.)

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

TopOverLayer

BottomLayer

TopLayer

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Small Outline SOT-26

INCHES

MILLIMETERS

NOTES

SYMBOL

MIN

MAX

MIN

MAX

0.035

0.000

0.035

0.010

0.003

0.110

0.102

0.059

0.014

0.057

0.006

0.051

0.020

0.008

0.122

0.118

0.069

0.022

0.90

0.00

0.90

0.25

0.08

2.80

2.60

1.50

0.35

1.45

0.15

1.30

0.50

0.20

3.10

3.00

1.75

0.55

0.037ref

0.075ref

0.95ref

1.90ref

0⁰

10⁰

0⁰

10⁰

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310

Preliminary Product Information

MicroPower Charge Pump Converter

Reflow Profiles

Profile Feature

Sn-Pb Eutectic Assembly

Pb-Free Assembly

Large Body

Pkg. thickness

≥2.5mm or Pkg.

volume ≥350mm³

Small Body

Pkg. thickness

<2.5mm or Pkg.

volume <350mm³

Large Body

Small Body

Pkg. thickness

≥2.5mm or Pkg.

Pkg. thickness

≥2.5mm or Pkg.

volume ≥350mm³volume ≥350mm³

3°C/second max.

Average ramp-up rate

3°C/second max.

(T to T )

Preheat

-Temperature Min(Tsmin)

-Temperature Max (Tsmax)

-Time (min to max)(ts)

100°C

150°C

200°C

60-120 seconds

60-180 seconds

3°C/second max.

Tsmax to T

-Ramp-up Rate

Time maintained above:

-Temperature (T )

183°C

217°C

60-150 seconds

-Time (t )

Peak Temperature(T )

225+0/-5°C

10-30 seconds

240+0/-5°C

10-30 seconds

245+0/-5°C

10-30 seconds

250+0/-5°C

20-40 seconds

Time within 5°C of actual Peak

Temperature (t )

Ramp-down Rate

6°C/second max.

6 minutes max.

3°C/second max.

8 minutes max.

Time

25°C

Peak

Temperature

*All temperatures refer to topside of the package, measured on the package body surface.

7F, No.9, Park Avenue. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

2/8/2006 REV:1.1

Fax: 886-3-563-0879

WWW: http://www.aimtron.com.tw

Email: service@aimtron.com.tw

AT1310 [AIMTRON]

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