AP1515P [ANACHIP]

150KHz, 1.5A PWM Buck DC/DC Converter; 为150KHz ， 1.5A PWM降压型DC / DC转换器


型号：	AP1515P
厂家：	ANACHIP CORP
描述：	150KHz, 1.5A PWM Buck DC/DC Converter 为150KHz ， 1.5A PWM降压型DC / DC转换器转换器稳压器开关式稳压器或控制器电源电路开关式控制器
文件：	总6页 (文件大小：157K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Features

General Description

- Output voltage: 3.3V and adjustable output

version

The AP1515 series are monolithic IC designed for a

step-down DC/DC converter, and own the ability of

driving a 1.5A load without additional transistor

component. Due to reducing the number of external

component, the board space can be saved easily.

The external shutdown function can be controlled

by logic level and then come into standby mode.

The internal compensation makes feedback control

have good line and load regulation without external

design. Regarding protected function, thermal

shutdown is to prevent over temperature operating

from damage, and current limit is against over

current operating of the output switch. If current

limit function occurred and V_FBis down to 0.5V

below, the switching frequency will be reduced.

- Adjustable version output voltage range, 1.23V to

18V+4%

- 150KHz +15% fixed switching frequency

- Voltage mode non-synchronous PWM control

- Thermal-shutdown and current-limit protection

- Operating voltage can be up to 22V

- Output load current: 1.5A

- SIP-4L Pb-Free package

- Low power standby mode

- Built-in switching transistor on chip

- Very Low Cost

Applications

The AP1515 series operates at

a switching

frequency of 150KHz thus allowing smaller sized

filter components than what would be needed with

lower frequency switching regulators. Other

features include a guaranteed +4% tolerance on

output voltage under specified input voltage and

output load conditions, and +15% on the oscillator

frequency. The output version included fixed 3.3V

and an adjustable type. The packages are available

in a standard 4-lead SIP-4L package.

- Simple High-efficiency step-down regulator

- On-card switching regulators

- Positive to negative converter

Pin Assignments

Pin Descriptions

Name

V_IN

Description

Operating voltage input

Switching output

(Front View)

1515

1 : V_IN

Output

2 : Output

Output voltage feedback control

Ground

3 : FB

GND

4 : GND

SIP-4L

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev.1.0 Oct 29, 2004

1/6

AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Ordering Information

AP1515 XX

Output version

Package

Blank : Adjustable

-33 : 3.3V

P: SIP-4L

(Bulk)

Block Diagram

V_IN

200mV

220mV

Current

1.235V

2.5V

Start

Source

bias

Reference

Regulator

Comp

Frequecy

compen-

sation

Amp

1.5A

Comp

Pre-driver

Switch

Output

Gnd

150kHz

OSC.

Thermal

Shutdown

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Oct 29, 2004

2/6

AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Absolute Maximum Ratings

Symbol

Parameter

Rating

+24

Unit

V_CC

Supply Voltage

V_SD

ON/OFF Pin input voltage

Feedback Pin voltage

Output voltage to Ground

Power dissipation

-0.3 to +18

-1

V_FB

V_OUT

P_D

Internally limited

-65 to +150

-40 to +125

+4.5 to +22

^oC

T_ST

Storage temperature

Operating temperature

Operating voltage

T_OP

V_OP

Electrical Characteristics (All Output Voltage Versions)

LOAD

Symbol

Par^Ia^Nmeter

Conditions ^IN

^{Unless otherwise specified, V = 12V for 3.3V, 5V, adjustable version and V =18V for the}M¹²in^V.^version.T^Iyp. ^{= 0.5A}Max.

Unit

V_FB=1.3V

-50

-100

173

I_FB

Feedback bias current

-10

(Adjustable version only)

127

110

150

F_OSC

F_SCP

Oscillator frequency

KHz

Oscillator frequency of When current limit occurred

1.4

1.5

short circuit protect

and V_FB< 0.5V, Ta=25 ^oC

_OUT=2A

V_SAT

I_CL

Saturation voltage

1.25

No outside circuit

V_FB=0V force driver on

V_FB=12V force driver off

Peak current

Max. Duty Cycle (ON)

Min. Duty Cycle (OFF)

100

Current limit

No outside circuit

V_FB=0V force driver on

No outside circuit

V_FB=12V force driver off

V_IN=22V

Output

Output = 0

-200

I_L

leakage

current

Output = -1

-5

I_Q

Quiescent Current

Standby Quiescent

Current

Thermal Resistance

Note 1

V_FB=12V force driver off

ON/OFF pin=5V

150

200

I_STBY

V_IN=22V

θ_JC

θ_JA

Junction to case

^oC/W

Junction to ambient

100

^oC/W

Part Number

Symbol

Parameter

Conditions

4.5V < V_IN< 22V

0.2A < I_LOAD< 1.5A

Typ.

Limit

Unit

Output

V_FB

1.23

1.193/1.18

1.267/1.28

V_MIN

V_MAX

Feedback

AP1515-ADJ

_OUTprogrammed for 3V

Efficiency

V_IN= 12V, I_LOAD=1.5A

4.75V < V_IN< 22V

0.2A < I_LOAD< 1.5A

3.168/3.135

3.432/3.465

V_OUT

Output voltage

Efficiency

3.3

V_MIN

V_MAX

AP1515-3.3V

V_IN= 12V, I_LOAD=1.5A

Specifications with boldface type are for full operating temperature range, the other type are for T_J=25ºC.

Note 1: Pin 4(GND) (< 1 mm length) & direct connect to internal GND layer.

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Oct 29, 2004

3/6

AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Typical Application Circuit

(1) Fixed Type Circuit

12V

DC Input

3.3V/1.5A

Output Load

56uH

Output

AP1515

-33

Vin

Inductor

Schottky

Diode

Cin

Capacitor

GND

(2) Adjustable Type Circuit

12V

2.5V/1.5A

Output Load

DC Input

47uH

Output

AP1515

Vin

Inductor

GND

Cin

Capacitor

Schottky

Diode

)

Vout = V_FB×(1 +

_FB= 1.23V

R2 = 1K ~ 3K

Typical Performance Characteristics

AP1515 Output Voltage v.s. Temperature

AP1515 Efficiency v.s. Temperature

(Vin=12V,Vout=3.3V,Io=1.5A)

(Vin=12V ,Io=1.5A)

3.5

3.45

3.4

3.35

3.3

3.25

3.2

3.15

3.1

3.05

2.95

2.9

-50 -30 -10 10 30 50 70 90 110 130 150

Temperature (TA) (°C)

-40 -20

20 40 60 80 100 120 140 160

Temperature (TA) (°C)

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Oct 29, 2004

4/6

AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Typical Performance Characteristics (Continued)

AP1515 Saturation Voltage v.s. Temperature

(Vcc=12V,Vfb=0V,VSD=0)

AP1515 Switch Current Limit v.s. Temperature

(Vcc=12V,Vfb=0V)

1.4

1.3

1.2

3.5

1.1

1.5A

0.5A

0.9

2.5

0.8

0.7

-50

-30

-10

-50

-25

100 125

Temperature (TA)ꢀ(°C)

Temperature (TA) (°C)

AP1515 Supply Current v.s. Temperature

(Vcc=12V , No Load ,Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))

Switch OFF

Switch ON

-50 -30 -10 10 30 50 70 90 110 130 150

Temperature (TA) (°C)

-50 -30 -10 10 30 50 70 90 110 130 150

Temperature (TA) (°C)

AP1515 Frequency v.s. Temperature

(Vcc=12V , Io=500mA ,Vout=5V)

AP1515 Feedback Current v.s. Temperature

(Vcc=12V , Vout=5V,Vfb=1.3V)

170

165

160

155

150

145

140

-10

-20

-30

-40

-50

-50 -30 -10 10 30 50 70 90 110 130 150

Temperature (TA) (°C)

-50 -30 -10 10 30 50 70 90 110 130 150

Temperature (TA) (°C)

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Oct 29, 2004

5/6

AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Function Description

Pin Functions

Output

Internal switch. The voltage at this pin switches

between (+V_IN– V_SAT) and approximately – 0.5V,

with a duty cycle of approximately V_OUT/ V_IN. To

minimize coupling to sensitive circuitry, the PC

board copper area connected to this pin should be

kept a minimum.

+V_IN

This is the positive input supply for the IC switching

regulator. A suitable input bypass capacitor must be

present at this pin to minimize voltage transients

and to supply the switching currents needed by the

regulator.

Ground

Feedback

Senses the regulated output voltage to complete

the feedback loop.

Circuit ground.

Marking Information

SIP-4L

( Top View )

Part Number: AP1515

Output Type: Adjustable

Part Number : AP1515

-33: Output Type: 3.3V

1515

Y WW X

15-33

Y WW X

Date Code

X: Internal code

WW: Nth week: 01~52

Y: Year:

"1" = 2001

"2" = 2002

"1" = 2001

"2" = 2002

Package Information

Package Type: SIP-4L

5^o

-7

14.25mm

+/-1.25mm

1.55mm

+/-0.1mm

0.38mm

3^o-5^o

1.03mm

+/-0.1

+/-0.03mm

3.65mm

+/-0.1mm

0.30mm

+/-0.1mm

0.41mm

0.46mm

+/-0.03mm

5^o

3^o-5^o

-7

1.27mm

+/-0.03mm

0.2mm Max.

1.42mm+/-0.1mm

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Oct 29, 2004

6/6

AP1515P [ANACHIP]

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