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ISL80121-5 の電気的特性と機能

ISL80121-5のメーカーはIntersilです、この部品の機能は「1A Ultra Low Dropout Linear Regulator」です。


製品の詳細 ( Datasheet PDF )

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

1 Page





ISL80121-5 pdf, ピン配列
Pin Configuration
ISL80121-5
ISL80121-5
(10 LD 3x3 DFN)
TOP VIEW
VOUT 1
VOUT 2
SENSE 3
PG 4
GND 5
PAD
10 VIN
9 VIN
8 ISET
7 ENABLE
6 SS
Pin Descriptions
PIN NUMBER
1, 2
3
4
5
6
7
8
9, 10
-
PIN NAME
VOUT
SENSE
PG
GND
SS
ENABLE
ISET
VIN
EPAD
DESCRIPTION
Output voltage. A minimum 10µF X5R/X7R output capacitor is required for stability. See “External Capacitor
Requirements” on page 9 for more details.
Remote voltage sense for internally fixed VOUT options. Parasitic resistance between the VOUT pin and the load
causes small voltage drops, which degrade VOUT accuracy. For applications that require a stiff VOUT, connect the
sense pin to the load.
VOUT in regulation signal. Logic low indicates VOUT is not in regulation, and must be grounded if not used.
Ground.
External capacitor adjusts inrush current.
VIN-independent chip enable. TTL and CMOS compatible.
Current limit setting. Current limit is 0.75A when this pin is left floating. This default value can be increased by
tying RSET to GND, or decreased by tying RSET to VIN. See “Programmable Current Limit” on page 8 for more
details. Do not short this pin to ground.
Input supply. A minimum of 10µF X5R/X7R input capacitor is required for stability. See “External Capacitor
Requirements” on page 9 for more details.
EPAD at ground potential. Soldering it directly to GND plane is required for thermal considerations. See “Power
Dissipation and Thermals” on page 9 for more details.
Submit Document Feedback
3
FN7713.6
March 21, 2016


3Pages


ISL80121-5 電子部品, 半導体
ISL80121-5
Typical Operating Performance Unless otherwise noted: VIN = 5.4V, VOUT = 5.0V, CIN = COUT = 10µF, TJ = +25°C,
IL = 0A.
150 1.8
1.2
120
+125°C
0.6
90
+25°C
0
60 -0.6
-40°C
30 -1.2
0 0 0.2 0.4 0.6 0.8
LOAD CURRENT (A)
FIGURE 3. DROPOUT VOLTAGE vs LOAD
1.0
-1.8
-50 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
FIGURE 4. OUTPUT VOLTAGE vs TEMPERATURE
150
1.8
1.2
0.6 +25°C
0
-0.6 +125°C
-40°C
-1.2
-1.8
0
0.25
0.50
0.75
OUTPUT CURRENT (A)
FIGURE 5. OUTPUT VOLTAGE vs OUTPUT CURRENT
1.00
3.30
3.25
3.20
+25°C
+125°C
3.15
3.10
-40°C
3.05
3.00
2.95
2.90
2.85 0
0.2 0.4 0.6 0.8
LOAD CURRENT (A)
FIGURE 6. GROUND CURRENT vs LOAD CURRENT
1
5.0
4.5
4.0
3.5
3.0
VIN = 6V
2.5
2.0
1.5
1.0
0.5
0-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
FIGURE 7. GROUND CURRENT IN SHUTDOWN vs TEMPERATURE
Submit Document Feedback
6
ENABLE (2V/DIV)
SS (2V/DIV)
VOUT (5V/DIV)
PG (5V/DIV)
TIME (2ms/DIV)
FIGURE 8. ENABLE START-UP
FN7713.6
March 21, 2016

6 Page



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部品番号部品説明メーカ
ISL80121-5

1A Ultra Low Dropout Linear Regulator

Intersil
Intersil


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