ADP1611 Analog Devices Data Sheet Manual
Summary
Power your demanding projects with the ADP1611, a high-efficiency integrated step-up DC-to-DC switching converter. This sophisticated component provides adjustable output voltage up to 20V in an extremely compact package, making it ideal for space-constrained applications like portable devices and TFT LCD displays. The comprehensive manual serves as your definitive guide, detailing technical specifications, advanced application circuitry, optimal PCB layout procedures, and the full theory of operation required for reliable integration into industrial or instrumentation systems.
Page 1 Text Content
20 V,1.2 MHz Step-Up DC-to-DC Switching Converter
ADP1611 FEATURES GENERAL DESCRIPTION Fully integrated 1.2 A , 0.23 Ω power switch
The ADP1611 is a step-up dc-to-dc switching converter with an
Pin-selectable 700 k Hz or 1.2 MHz PWM frequency
integrated 1.2 A, 0.23 Ω power switch capable of providing an
90% efficiency
output voltage as high as 20 V. With a package height of less
Adjustable output voltage up to 20 V
than 1.1 mm, the ADP1611 is optimal for space-constrained
3% output regulation accuracy
applications such as portable devices or thin film transistor
Adjustable soft start
(TFT) liquid crystal displays (LCDs).
Input undervoltage lockout
MSOP 8-lead package The ADP1611 operates in pulse-width modulation (PWM) current mode with up to 90% efficiency. Adjustable soft start prevents inrush currents at startup. The pin-selectable switching
APPLICATIONS
frequency and PWM current-mode architecture allow excellent
TFT LC bias supplies
transient response, easy noise filtering, and the use of small,
Portable applications
cost-saving external inductors and capacitors.
Industrial/instrumentation equipment
The ADP1611 is offered in the Pb-free 8-lead MSOP and operates over the temperature range of −40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
COMP IN
www.BDTIC.com/ADI ERROR AMP
REF ADP1611
BIASgm
RAMP GEN
DRIVER
COMPARATOR
RT OSC
SOFT STARTSS
SD CURRENT- SENSE AMPLIFIER
Figure 1.
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.
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Specifications subject to change without notice. No license is granted by implication
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Page Summary Contents For ADP1611 Analog Devices Data Sheet Manual
Manual Details
| Brand | Analog Devices |
|---|---|
| Pages | 20 |
| File Size | 645.51 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What is the maximum output voltage this device can supply?
It can provide an adjustable output voltage up to 20 V.
Does the converter prevent excessive current at startup?
Yes, the device features adjustable soft start capability to prevent inrush currents.
What are key considerations for PCB layout?
Keep high current traces short and wide; place feedback resistors as close to FB as possible.
What is the expected overall regulation accuracy?
The overall regulation accuracy is specified at ±3%.