AP1551SL-13 Diodes Inc, AP1551SL-13 Datasheet

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AP1551SL-13

Manufacturer Part Number
AP1551SL-13
Description
IC CONV DC-DC PWM 2CH 2A 16-SOIC
Manufacturer
Diodes Inc
Type
Step-Down (Buck)r
Datasheet
1.AP1551SL-U.pdf (8 pages)

Specifications of AP1551SL-13

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
2
Voltage - Output
1.23 ~ 18 V
Current - Output
2A
Frequency - Switching
150kHz
Voltage - Input
4.5 ~ 22 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Output Voltage
+ 1.23 V to + 18 V
Switching Frequency
150 KHz
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
SMD/SMT
Duty Cycle (max)
0 % to 100 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
AP1551SLDITR
150KHz, Dual Channel 2A PWM Buck DC/DC Converter
- Dual adjustable output channel
- Adjustable
- 150KHz +15% fixed switching frequency
- Voltage mode non-synchronous PWM control
- Thermal-shutdown and current-limit protection
- ON/OFF shutdown control input
- Operating voltage can be up to 22V
- Output load current: 2A
- SOP-16L Pb-Free packages
- Low power standby mode
- Built-in switching transistor on chip
- Simple High-efficiency step-down regulator
- On-card switching regulators
- Positive to negative converter
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.
18V+4%
Pin Assignments
Features
Applications
GND2
GND2
GND1
GND1
Not Recommended for New Design
SD1
V
SD2
V
IN1
IN2
output
1
2
3
4
5
6
7
8
( Top View )
SOP-16L
voltage
16
15
14
13
12
11
10
range,
9
GND2
GND2
FB2
V
GND1
GND1
V
FB1
OUT1
OUT2
1.23V
to
1/8
The AP1551 is monolithic IC designed for dual
channel step-down DC/DC converters, and own the
ability of driving a 2A load each channel 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
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
frequency will be reduced. The AP1551 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 packages are available in a
standard 16-lead SOP-16 package.
GND1/2
V
Name
SD1/2
FB1/2
V
General Description
Pin Descriptions
OUT1/2
IN1/2
FB
into
is down to 0.5V below, the switching
Operating voltage input
Switching output
Ground
Output voltage feedback control
ON/OFF Shutdown
standby
Description
mode.
Rev. 1.0 Nov 17, 2004
AP1551
The
internal

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AP1551SL-13 Summary of contents

Page 1

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Features - Dual adjustable output channel - Adjustable output voltage range, 18V+4% - 150KHz +15% fixed switching frequency - Voltage mode non-synchronous PWM control - Thermal-shutdown and ...

Page 2

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Ordering Information Block Diagram (Channel 1 and channel 2 are the same) Current 1.235V Source Reference bias + Amp _ FB1 Anachip Corp. www.anachip.com.tw AP 1551 X ...

Page 3

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Absolute Maximum Ratings Symbol Parameter V Supply Voltage CC V ON/OFF Pin input voltage SD V Feedback Pin voltage FB V Output voltage to Ground OUT P ...

Page 4

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Electrical Characteristics (Continued) Symbol Parameter Output V FB1 Feedback AP1551-channel 1 η Efficiency Output V FB2 Feedback AP1551-channel 2 η Efficiency Specifications with boldface type are for ...

Page 5

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Typical Performance Characteristics (For Each Channel) AP1551 Efficiency v.s. Temperature (Vin=12V,Vout=5V,Io=2A -50 -30 -10 10 ...

Page 6

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Typical Performance Characteristics (For Each Channel) (Continued) AP1551 Threshold Voltage v.s. Temperature (Vcc=12V , Io=100mA) 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 -50 -30 ...

Page 7

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Function Description Pin Functions +V IN1/2 This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be present at this ...

Page 8

Not Recommended for New Design 150KHz, Dual Channel 2A PWM Buck DC/DC Converter Marking Information SOP-16L Logo Part No. Package Information Package Type: SOP-16L (4X Dimensions In Millimeters Symbol Min. A 1.40 A1 0.10 ...

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