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ISL80121-5 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL80121-5
部品説明 1A Ultra Low Dropout Linear Regulator
メーカ Intersil
ロゴ Intersil ロゴ 



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ISL80121-5 Datasheet, ISL80121-5 PDF,ピン配置, 機能
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

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1A Ultra Low Dropout Linear Regulator

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