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1-ADJ
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ISL8010
DATASHEET
High Performance 1A LDO
ISL80101
Features
The ISL80101 is a low voltage, high current, single output LDO
specified at 1A output current. This LDO operates from input
voltages of 2.2V to 6V. Fixed output voltage options are
available in 1.8V, 2.5V, 3.3V and 5.0V versions. Other custom
voltage options are available upon request. For the adjustable
output version of the ISL80101, please refer to the
ISL80101-ADJ datasheet.
• ±1.8% VOUT accuracy guaranteed over line, load and
TJ = -40°C to +125°C
A submicron BiCMOS process is utilized for this product family
to deliver the best-in-class analog performance and overall
value. This CMOS LDO consumes 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.
• Excellent 65dB PSRR
Table 1 shows the differences between the ISL80101 and
others in its family:
• Post regulation of switched mode power supplies
PART NUMBER
PROGRAMMABLE
ILIMIT
ILIMIT
(DEFAULT)
ADJ or FIXED
VOUT
ISL80101-ADJ
No
1.75A
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
5.4V ± 10%
10µF
CIN
10
VIN
VOUT
9 V
IN
10k
R3
SENSE
5.0V ± 1.8%
2
10µF
COUT
3
ISL80101
7
6
0.01µF
CSS
VOUT
1
ENABLE
PG
100k
RPG
4
SS
• Very fast transient response
• Programmable soft-starting
• Power-good output
• 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
• Industrial systems
• Medical equipment
• Telecommunications and networking equipment
• Servers
• Hard disk drives (HD/HDD)
Related Literature
• See AN1592, “ISL80101 High Performance 1A LDO
Evaluation Board User Guide”
140
DROPOUT VOLTAGE (mV)
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
• Very low 130mV dropout voltage at VOUT = 2.5V
120
100
80
60
40
VOUT = 2.5V
20
GND
0
5
0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
FIGURE 1. TYPICAL APPLICATION CIRCUIT
September 25, 2015
FN6931.2
1
FIGURE 2. DROPOUT vs LOAD CURRENT
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 2009, 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.
ISL80101
Block Diagram
VIN
EN
CONTROL
LOGIC
-
REFERENCE
+
SOFT-START
THERMAL
SENSOR
PG
PG
EA
+
FET DRIVER
WITH CURRENT
LIMIT
VOUT
SS
+
SENSE
-
GND
Ordering Information
PART NUMBER
(Notes 1, 3, 4)
PART MARKING
VOUT VOLTAGE
(Note 2)
TEMP RANGE (°C)
PACKAGE
(RoHS Compliant)
PKG DWG. #
ISL80101IR18Z
DZEB
1.8V
-40 to +125
10 Ld 3x3 DFN
L10.3x3
ISL80101IR25Z
DZFB
2.5V
-40 to +125
10 Ld 3x3 DFN
L10.3x3
ISL80101IR33Z
DZGB
3.3V
-40 to +125
10 Ld 3x3 DFN
L10.3x3
ISL80101IR50Z
DZHB
5.0V
-40 to +125
10 Ld 3x3 DFN
L10.3x3
ISL80101EVAL2Z
Evaluation Board
NOTES:
1. Add “-T*” for Tape and Reel. Please refer to TB347 for details on reel specifications.
2. For other output voltages, contact Intersil Marketing.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4. For Moisture Sensitivity Level (MSL), please see device information page for ISL80101. For more information on MSL please see Technical Brief
TB363.
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2
FN6931.2
September 25, 2015
ISL80101
Pin Configurations
ISL80101
(10 LD 3x3 DFN)
TOP VIEW
VOUT 1
10 VIN
VOUT 2
SENSE 3
PG 4
GND 5
9 VIN
EPAD
8 NC
7 ENABLE
6 SS
Pin Descriptions
PIN NUMBER
PIN NAME
1, 2
VOUT
3
SENSE
4
PG
5
GND
6
SS
7
ENABLE
8
NC
No connection; Leave floating.
9, 10
VIN
Input supply; A minimum of 10µF X5R/X7R input capacitor is required for proper operation. See “External
Capacitor Requirements” on page 8 for more details.
-
EPAD
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DESCRIPTION
Regulated output voltage. A minimum 10µF X5R/X7R output capacitor is required for stability. See “External
Capacitor Requirements” on page 8 for more details.
Sense is the LDO's output feedback, providing a remote voltage sensing.
This is an open-drain logic output used to indicate the status of the output voltage. Logic low indicates VOUT is not
in regulation. This pin must be grounded if not used.
Ground
External capacitor on this pin adjusts startup ramp and controls in-rush current.
VIN independent chip enable. TTL and CMOS compatible.
EPAD at ground potential; It is recommended to solder the EPAD to the ground plane.
3
FN6931.2
September 25, 2015
ISL80101
Absolute Maximum Ratings
Thermal Information
VIN Relative to GND (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
VOUT Relative to GND (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
PG, ENABLE, SENSE, SS
Relative to GND (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
ESD Rating
Human Body Model (Tested per JESD22 A114F) . . . . . . . . . . . . . . .2.5kV
Machine Model (Tested per JESD22 A115C) . . . . . . . . . . . . . . . . . 250V
Charge Device Model (Tested per JESD22-C101C). . . . . . . . . . . . . . . 2kV
Latch-Up (Tested per JESD78C, Class 2, Level A) . . . . ±100mA at +125°C
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
10 Ld DFN Package (Notes 6, 7) . . . . . . . .
48
7
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions (Notes 8, 9)
Junction Temperature Range (TJ) (Note 8) . . . . . . . . . . . .-40°C to +125°C
VIN Relative to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2V to 6V
VOUT Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mV to 5V
PG, ENABLE, SENSE, SS relative to GND . . . . . . . . . . . . . . . . . . . . 0V to 6V
PG Sink Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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