RS8017-ADFP [PTC]
Dual Channel 1.5MHz, 1.2A, Synchronous Step-Down DC/DC Converter;
| 型号： | RS8017-ADFP |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | Dual Channel 1.5MHz, 1.2A, Synchronous Step-Down DC/DC Converter |
| 文件： | 总4页 (文件大小：260K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RS8017
Dual Channel
1.5MHz, 1.2A, Synchronous Step-Down
DC/DC Converter
DESCRIPTION
FEATURES
The RS8017 dual-channel switch regulator is a 1.2A
step-down converter with an input voltage range of 2.7V
to 5.5V and an adjustable output voltage from 0.6V to VIN
The 1.5MHz switching frequency enables the use of
small external components. The small footprint and high
efficiency make the RS8017 an ideal choice for portable
applications.
Channel Output Current: Up to 1.2A
Output Voltage: 0.6V to VIN
Input Voltage: 2.7 to 5.5V
Efficiency up to 95%
45μA No Load Quiescent current
Shutdown Current: <1μA
Internal Soft Start
Thermal Shutdown
Current Limit Protection
No external Compensation Required
100% Duty Cycle Operation
1.5MHz Switching Frequency
DFN-12L green package
The RS8017 channel 1 or channel 2 delivers 1.2A
maximum output current while consuming only 55μA of
no-load quiescent current. Ultra-low RDS(ON) integrated
MOSFETs and 100% duty cycle operation make the
RS8017 an ideal choice for high output voltage, high
current applications which require a low dropout
threshold.
APPLICATIONS
The RS8017 provides excellent transient response and
high output accuracy across the operating range. No
external compensation components are required.
DSC、DV、BT device
ADXL、Mobil Phone
Portable Media Players
Handheld Computers
The RS8017 maintains high efficiency throughout the
load range. The RS8017’s unique architecture produces
reduced ripple and spectral noise. Over-temperature and
short-circuit protection safeguard the RS8017 and
system components from damage.
BLOCK DIAGRAM
VIN
EN
OSC &
Shutdown
Control
Current
Limit
Detector
Slope
Compensation
Current
Sense
Driver
Control
Logic
PWM
Comparator
LX
FB/VOUT
Error
Amplifier
Current
Source
Mux
Controller
Current
Detector
UVLO&
Power Good
Detector
VREF
GND
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan
RS8017
APPLICATION CIRCUIT
L2 2.2μH
VOUT2
COUT2
VIN2
4.7μF
1
12
R21
850k
VIN2
EN2
NC2
FB2
C21
CIN2
2
11
10
9
LX2
22pF
4.7μF
3
GND
RS8017
R12
R22
4
FB1
GND
LX1
CIN1
4.7μF
5
8
NC1
6
7
C11
22pF
R11
850k
EN1
VIN1
VIN1
VOUT1
L1 2.2μH
COUT1
4.7μF
Figure : Adjustable Voltage Regulator
V1.0
2
January 2014
RS8017
ORDER INFORMATION
Device
Device Code
X is nominal output voltage designator :
A : ADJ
YY is package designator :
DF: DFN-12 (3mm x 3mm)
Z is Lead Free designator :
RS8017-X YY Z
P: Commercial Standard, Lead (Pb) Free and Phosphorous (P) Free Package
G : Green (Halogen Free with Commercial Standard)
PIN ASSIGNMENTS
DFN-12
PIN DESCRIPTION
Symbol
Description
Pin No.
VIN2
LX2
Power Input of Channel 2.
Pin for Switching of Channel 2.
1
2
GND
FB1
Ground. Exposed pad should be soldered to PCB board and connected to GND.
Feedback of Channel 1.
3, 9, 13
4
5, 11
6
7
8
NC1, NC2 No Connection or Connect to VIN.
EN1
VIN1
LX1
FB2
EN2
Chip Enable of Channel 1.
Power Input of Channel 1.
Pin for Switching of Channel 1.
Feedback of Channel 2.
10
12
Chip Enable of Channel 2.
V1.0
3
January 2014
RS8017
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian Dist., New Taipei City 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.0
13
January 2014
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