|
|
PDF ISL80121-5 Data sheet ( Hoja de datos )
| Número de pieza | ISL80121-5 | |
| Descripción | 1A Ultra Low Dropout Linear Regulator | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL80121-5 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
DATASHEET
1A Ultra Low Dropout Linear Regulator with
Programmable Current Limiting
ISL80121-5
The ISL80121-5 is a low dropout voltage, single output LDO
with programmable current limiting. The ISL80121-5 operates
from input voltages of 5V to 6V with a nominal output voltage
of 5V. Other custom voltage options are available upon
request.
A submicron BiCMOS process is utilized for this product family
to deliver the best in class analog performance and overall
value. The programmable current limiting improves system
reliability of end applications. 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.
This BiCMOS 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. Quiescent current is modestly compromised to
achieve a very fast load transient response.
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
• High accuracy current limit programmable up to 1.75A
• Very fast transient response
• 210µVRMS output noise
• Power-good output
• Programmable soft-start
• Over-temperature protection
• Small 10 Ld DFN package
Applications
• USB devices
• Telecommunications and networking
• Medical equipment
• Instrumentation systems
• Routers and switchers
• Gaming
Typical Applications
5.4V ±10%
VIN
CIN
10µF
ISL80121-5
10 VIN
9 VIN
VOUT 1
VOUT 2
8
ISET
SENSE 3
ON
OFF
CSS
7
ENABLE
6 SS GND
5
PG 4
5.0V
VOUT
COUT
10µF
RPG
100kΩ
5.4V ±10%
VIN
CIN
10µF
RSET
10kΩ
ON
OFF
CSS
ISL80121-5
10
VIN
9
VIN
8
ISET
1
VOUT
VOUT 2
SENSE 3
7
ENABLE
6 SS GND
5
4
PG
RSENSE
10Ω
COUT
10µF
5.0V
VOUT
RPG
100kΩ
March 21, 2016
FN7713.6
ILIMIT = 0.75A
(DEFAULT)
FIGURE 1.
1
ILIMIT = 0.75 + -R----S-----E--2--T-.--9----k---------
FIGURE 2.
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. 2010-2012, 2016. 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  
ISL80121-5
Electrical Specifications Unless otherwise noted, all parameters are established over the following specified conditions:
VIN = 5.4V, VOUT = 5.0V, TJ = +25°C, ILOAD = 0A. Applications must follow thermal guidelines of the package to determine worst case junction
temperature. Please refer to “Functional Description” on page 8 and Tech Brief TB379.
Boldface limits apply across the operating temperature range, -40°C to +125°C. Pulse load techniques used by ATE to ensure TJ = TA defines
established limits. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 8) TYP (Note 8)
UNITS
AC CHARACTERISTICS
Input Supply Ripple Rejection
Output Noise Voltage
ENABLE PIN CHARACTERISTICS
PSRR
f = 1kHz, ILOAD = 1A
f = 1kHz, ILOAD = 100mA
ILOAD = 10mA, BW = 10Hz < f < 100kHz
40 dB
40 dB
210 µVRMS
Turn-on Threshold
Hysteresis
ENABLE Pin Turn-on Delay
ENABLE Pin Leakage Current
SOFT-START CHARACTERISTICS
VEN(HIGH)
VEN(HYS)
tEN
5.4V < VIN < 6V
5.4V < VIN < 6V
COUT = 10µF, ILOAD = 1A
VIN = 6V, ENABLE = 3V
0.5 0.8 1.0
10 80 200
100
1
V
mV
µs
µA
Reset Pull-down Current
Soft-start Charge Current
PG PIN CHARACTERISTICS
IPD
ICHG
ENABLE = 0V, SS = 1V
0.5 1 1.3
-3.3 -2 -0.8
mA
µA
VOUT PG Flag Threshold
75 84
VOUT PG Flag Hysteresis
4
PG Flag Low Voltage
ISINK = 500µA
47
PG Flag Leakage Current
VIN = 6V, PG = 6V
0.05
NOTES:
8. Compliance to data sheet limits is assured by one or more methods: production test, characterization and/or design.
9. Dropout is defined by the difference in supply VIN and VOUT when the output is below its nominal regulation.
92
100
1
%VOUT
%
mV
µA
Submit Document Feedback
5
FN7713.6
March 21, 2016
5 Page 
ISL80121-5
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
February 24, 2011
FN7713.2
1. page 1, paragraph 2, “The programmable current limiting improves system reliability of applications”
changed to “The programmable current limiting improves system reliability of end applications.”
2. page 1, Features, “Programmable Soft-starting” changed to “Programmable Soft-Start”
3. Made subbing consistent throughout document.
4. page 3, EPAD Description “directly to GND plane is optional.” Changed to “directly to GND plane is required
for thermal considerations. See “Power Dissipation and Thermals” on page 9 for more details.”
5. page 5, Removed Notes in Electrical Spec Table, which read:”Minimum capacitor of 10µF X5R/X7R on VIN
and VOUT required for stability.” and “If the current limit for inrush current is acceptable in application, do
not use this feature. Used only when large bulk capacitance required on VOUT for application.”
6. page 5, Electrical Specifications, PG Pin Characteristics, Vout PG Flag Threshold
a.Typical "85" changed to “84” %Vout
7. page 9, after Thermal Fault Protection section
a.Added “General Power PAD Design Considerations” section with Figure 14.
8. All PGOOD changed to PG throughout.
9. Changed Theta Ja from 51C/W to 48C/W.
1.page 1, Features
a."200µVrms Output Noise” changed to “210 µVrms Output Noise”
2.page 1, Typical Applications, right side figure
a.Resize "VOUT" (pin2) and “SENSE” (pin3)
3.page 8, Equation 4
a.Extra parenthesis ")" removed
December 6, 2010
December 2, 2010
FN7713.1
FN7713.0
page 1 Before Features added Table of Key Differences.
page 2 Block Diagram - Removed “ADJ Voltage Version” and left the “Sense” Connection.
page 3 Pin Number 8, description, 2nd sentence: “Current limit is 0.75mA...” changed to “Current limit is
0.75A…"
page 5 Electrical Specifications, AC Characteristics, Input Supply Ripple Rejection Test conditions and Typical
values changed from “f = 1kHz, ILOAD = 1A, f = 120Hz, ILOAD = 1A”
TO “f = 1kHz, ILOAD = 1A, f = 1kHz, ILOAD = 100mA”
page 6, Figure 5 - X-axis label changed from “Output Current (mA)" to “Output Current (A)
page 8, Figure 14 - a.Figure label change. “IN” in "VIN" was subscripted.
1. In “Block Diagram” on page 2:
a. Added “ADJ adjustable voltage version” Pin. Added “fixed voltage version” to “SENSE” pin
2. On page 4: “Ground Pin Current” Test Conditions
a. Replaced "VOUT+0.4V" with "2.2V" on both lines
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
Submit Document Feedback 11
FN7713.6
March 21, 2016
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ISL80121-5.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL80121-5 | 1A Ultra Low Dropout Linear Regulator | Intersil |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |