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零件编号 | ADP1610 | ||
描述 | 1.2 MHz DC-DC Step-Up Switching Converter | ||
制造商 | Analog Devices | ||
LOGO | |||
1 Page
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1.2 MHz DC-DC Step-Up Switching Converter
ADP1610
FEATURES
Fully integrated 1.2 A , 0.2 Ω, power switch
Pin-selectable 700 kHz or 1.2 MHz PWM frequency
92% efficiency
Adjustable output voltage up to 12 V
3% output regulation accuracy
Adjustable soft start
Input undervoltage lockout
MSOP 8-lead package
APPLICATIONS
TFT LC bias supplies
Portable applications
Industrial/instrumentation equipment
GENERAL DESCRIPTION
The ADP1610 is a dc-to-dc step-up switching converter with an
integrated 1.2 A, 0.2 Ω power switch capable of providing an
output voltage as high as 12 V. With a package height of less that
1.1 mm, the ADP1610 is optimal for space-constrained
applications such as portable devices or thin film transistor
(TFT) liquid crystal displays (LCDs).
The ADP1610 operates in pulse-width modulation (PWM)
current mode with up to 92% efficiency. Adjustable soft start
prevents inrush currents at startup. The pin-selectable switching
frequency and PWM current-mode architecture allow excellent
transient response, easy noise filtering, and the use of small,
cost-saving external inductors and capacitors.
The ADP1610 is offered in the Pb-free 8-lead MSOP and
operates over the temperature range of −40°C to +85°C.
FB 2
RT 7
FUNCTIONAL BLOCK DIAGRAM
REF
COMP
1
ERROR
AMP
gm
IN
6
BIAS
ADP1610
RAMP
GEN
OSC
F/F
RQ
S
COMPARATOR
DRIVER
5 SW
SS 8
SD 3
SOFT START
Figure 1.
CURRENT
SENSE
AMPLIFIER
4
GND
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
www.DataSheet4U.com
ADP1610
1.4
FSW = 700kHz
1.3 VFB = 1V
1.2
1.1
1.0
VIN = 5.5V
0.9
0.8 VIN = 3.3V
0.7
0.6 VIN = 2.5V
0.5
0.4
–40
–15 10 35 60
AMBIENT TEMPERATURE (°C)
85
Figure 16. Supply Current vs. Ambient Temperature
3.5
VIN = 3.3V
SD = 0.4V
3.0
2.5
2.0
1.5
1.0
0.5
0
–40 15
70 125
TEMPERATURE (°C)
Figure 17. Supply Current in Shutdown vs. Ambient Temperature
CH1 = IL 500mA/DIV
CH2 = VSW 5V/DIV
2
VIN = 3.3V
VOUT = 10V
ILOAD = 200mA
FSW = 700kHz
L = 10µH
1
CH1 10.0mVΩ CH2 5.00V M400ns
A CH2 10.0V
T 136.000ns
Figure 18. Switching Waveform in Continuous Conduction
CH1 = IL 200mA/DIV
CH2 = VSW 5V/DIV
2
VIN = 3.3V
VOUT = 10V
ILOAD = 20mA
FSW = 700kHz
L = 10µH
1
CH1 10.0mVΩ CH2 5.00V M400ns
A CH2 10.0V
T 136.000ns
Figure 19. Switching Waveform in Discontinuous Conduction
VIN = 3.3V, VOUT = 10V
COUT = 10µF, L = 10µH, RC = 130Ω
CC = 270pF, FSW = 700kHz
CH1 = VOUT, 200mV/DIV
CH2 = IOUT, 200mA/DIV
1
2
CH1 200mV CH2 10.0mVΩ M200µs A CH2 7.60mV
Figure 20. Load Transient Response, 700 kHz , VOUT = 10 V
VIN = 3.3V, VOUT = 10V
COUT = 10µF, L = 4.7µH, RC = 220kΩ
CC = 150pF, FSW = 1.2MHz
CH1 = VOUT, 200mV/DIV
CH2 = IOUT, 200mA/DIV
1
2
CH1 200mV CH2 10.0mVΩ M200µs
A CH2 7.60mV
Figure 21. Load Transient Response, 1.2 MHz, VOUT = 10 V
Rev. 0 | Page 8 of 16
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ADP1610
OUTLINE DIMENSIONS
Preliminary Technical Data
3.00
BSC
3.00
BSC
8
1
5
4.90
BSC
4
PIN 1
0.65 BSC
0.15
1.10 MAX
0.00
0.38
0.22
COPLANARITY
0.10
SEATING
PLANE
0.23
0.08
8°
0°
COMPLIANT TO JEDEC STANDARDS MO-187AA
0.80
0.60
0.40
Figure 34. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model
Temperature Range
ADP1610ARMZ-R71 −40°C to +85°C
Package Description
8-Lead Mini Small Outline Package [MSOP]
1 Z = Pb-free part.
Package Option
RM-8
Branding
P03
© 2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04472–0–10/04(0)
Rev. 0 | Page 16 of 16
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页数 | 16 页 | ||
下载 | [ ADP1610.PDF 数据手册 ] |
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