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PDF ISL80101-ADJ Data sheet ( Hoja de datos )
| Número de pieza | ISL80101-ADJ | |
| Descripción | High Performance 1A LDO | |
| Fabricantes | Intersil | |
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DATASHEET
High Performance 1A LDO
ISL80101-ADJ
The ISL80101-ADJ is a low voltage, high current, single output
LDO specified at 1A output current. This LDO operates from
input voltages from 2.2V to 6V, and is capable of providing
output voltages from 0.8V to 5V. The ISL80101-ADJ features
an adjustable output. For the fixed output version of the
ISL80101-ADJ, please refer to the ISL80101 datasheet.
A submicron BiCMOS process is utilized for this product family
to deliver the best in class analog performance and overall
value. This CMOS LDO will consume significantly lower
quiescent current as a function of load compared to bipolar
LDOs, which translates into higher efficiency and packages
with smaller footprints. State of the art internal compensation
achieves a very fast load transient response. An external
capacitor on the soft-start pin provides an adjustable
soft-starting ramp. The ENABLE feature allows the part to be
placed into a low quiescent current shutdown mode. A
Power-good logic output signals a fault condition.
Table 1 shows the differences between the ISL80101-ADJ and
others in its family:
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART NUMBER
ISL80101-ADJ
PROGRAMMABLE
ILIMIT
No
ILIMIT
(DEFAULT)
1.75A
ADJ OR FIXED
VOUT
ADJ
ISL80101
No
1.75A
1.8V, 2.5V,
3.3V, 5.0V
ISL80101A
Yes
1.62A
ADJ
ISL80121-5
Yes
0.75A
5.0V
Features
• ±1.8% VOUT accuracy guaranteed over line, load and
TJ = -40°C to +125°C
• Very low 130mV dropout voltage at VOUT = 2.5V
• Very fast transient response
• Programmable soft-starting
• Power-good output
• Excellent 65dB PSRR
• Current limit protection
• Thermal shutdown function
• Available in a 10 Ld DFN package
• Pb-Free (RoHS compliant)
Applications
• DSP, FPGA and µP core power supplies
• Noise-sensitive instrumentation systems
• Post regulation of switched mode power supplies
• Industrial systems
• Medical equipment
• Telecommunications and networking equipment
• Servers
• Hard disk drives (HD/HDD)
Related Literature
• AN1592, “ISL80101 High Performance 1A LDO Evaluation
Board User Guide”
2.5V ± 10%
10µF
CIN
10k
R3
10 VIN
9 VIN
VOUT 1
VOUT 2
82pF
CPB
ADJ 3
ISL80101-ADJ
7 ENABLE PG 4
0.01µF
CSS
6 SS
GND
5
2.61k
R2
1.00k
R1
1.8V
10µF
COUT
100k
RPG
FIGURE 1. TYPICAL APPLICATION CIRCUIT
140
120
100
80
60
40
20 VOUT = 2.5V
00 0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT (A)
FIGURE 2. DROPOUT vs LOAD CURRENT
August 26, 2015
FN7834.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC. 2011, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL80101-ADJ
Electrical Specifications Unless otherwise noted, 2.2V < VIN < 6V, VOUT = 0.5V, TJ = +25°C. Applications must follow thermal guidelines
of the package to determine worst case junction temperature. Please refer to “Applications Information” on page 8 and Tech Brief TB379.
Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 10) TYP (Note 10) UNITS
ENABLE PIN CHARACTERISTICS
Turn-on Threshold
0.5 0.8
1
V
Hysteresis
10 80 200 mV
ENABLE Pin Turn-on Delay
ENABLE Pin Leakage Current
SOFT-START CHARACTERISTICS
COUT = 10µF, ILOAD = 1A
VIN = 6V, ENABLE = 2.8V
100
1
µs
µA
SS Pin Currents (Note 12)
IPD
ICHG
VIN = 3.5V, ENABLE = 0V, SS = 1V
0.5 1 1.3 mA
-3.3 -2 -0.8 µA
PG PIN CHARACTERISTICS
VOUT PG Flag Threshold
75 85 92 %VOUT
VOUT PG Flag Hysteresis
4%
PG Flag Low Voltage
VIN = 3V, ISINK = 500µA
100 mV
PG Flag Leakage Current
VIN = 6V, PG = 6V
1 µA
NOTES:
10. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
11. Dropout is defined as the difference in supply VIN and VOUT when the supply produces a 2% drop in VOUT from its nominal voltage.
12. IPD is the internal pull down current that discharges the external SS capacitor on disable. ICHG is the current from the SS pin that charges the external
SS capacitor during start-up.
Submit Document Feedback
5
FN7834.3
August 26, 2015
5 Page 
ISL80101-ADJ
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you
have the latest revision. (Continued)
DATE
REVISION
CHANGE
July 31, 2014
FN7834.2
Updated the “Block Diagram” on page 2 reversed the + and - terminals on the EA amp. The inverting terminal
is now connected to the Adj/Sense pin.
Updated About Intersil verbiage to new standard.
Updated “Package Outline Drawing” on page 12 to latest revision.
August 3, 2011
FN7834.1
PAGE 1
1. Introduction, paragraph 1: Last two sentences removed, and replaced with: "The ISL80101-ADJ features
an adjustable output. For the fixed output version of the ISL80101, please refer to the ISL80101 datasheet."
2. Table 1: Replaced Table 1 with Table 1 from FN6931 to include the "ADJ or Fixed VOUT" column and
"ISL80101-ADJ" row.
3. Features: "Available in a 10 Ld DFN Package" has "TO220-5, TO263-5 and SOT223-5 to follow soon"
removed.
PAGE 5
1. Enable Pin Characteristics
a. "Enable Pin Turn-on Delay" changed to "ENABLE Pin Turn-on Delay"
b. "Enable Pin Leakage Current" changed to "ENABLE Pin Leakage Current"
PAGE 7
Figure 9: Timescale changed from "20µs/DIV" to "TIME (20µs/DIV)"
PAGE 8
2. Equation 1 - Parentheses deleted.
3. Equation 2 - Parentheses deleted.
March 31, 2011
FN7834.0 Initial Release.
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
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