ISL9021AIINZ-T [INTERSIL]
250mA Single LDO with Low IQ, Low Noise and High PSRR LDO; 250毫安单LDO具有低IQ ,低噪声,高PSRR LDO型号: | ISL9021AIINZ-T |
厂家: | Intersil |
描述: | 250mA Single LDO with Low IQ, Low Noise and High PSRR LDO |
文件: | 总10页 (文件大小:347K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
250mA Single LDO with Low I , Low Noise and High
Q
PSRR LDO
ISL9021A
Features
The ISL9021A is a single LDO, which provides high
performance, low input voltage and high PSRR. It delivers
guaranteed continuous 250mA load current and is stable with
1µF to 4.7µF of output capacitance (±30%) with an ESR range
of 5mΩ to 400mΩ.
• High Performance LDO with 250mA Guaranteed Continuous
Output Current
• Input Voltage Range: 1.5V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• High PSRR: 75dB @ 10kHz, 50dB @ 1MHz
• Low Quiescent Current: 35µA
The input voltage range for the ISL9021A is between 1.5V to
5.5V and the output voltage comes in many fixed voltage
options with ±1.8% accuracy over-temperature, line and load
ranges. The ISL9021A has typical PSRR of 75dB @ 10kHz and
50dB @ 1MHz.
• Dropout Voltage: <150mV @ 250mA
• Stable with 1µF to 4.7µF Output Capacitance (±30%) with
an ESR range of 5mΩ to 400mΩ
The reverse current protection feature prevents current from
flowing back to the power source when the output voltage is
pulled higher than the input.
• ±1.8% Output Accuracy Over-Temperature/Load/Line
• Soft-start Limits Input Current Surge During Enable
• Current Limit and Overheat Protection
The ISL9021A is offered in tiny 4-bump 2mmx2mm WLCSP
and 1.6mmx1.6mm 6 Ld µTDFN packages.
• -40°C to +85°C Operating Temperature Range
• Available in 2mmx2mm 4-bump WLCSP Package and
1.6mmx1.6mm 6 Ld µTDFN
Related Literature
• See FN6867, ISL9021 “250mA Single LDO with Low IQ, Low
Noise and High PSRR LDO”
• Pb-free (RoHS compliant)
Applications
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Handheld Devices including Medical Handhelds
ISL9021A
VO
VIN (1.5V TO 5.5V)
VOUT
VIN
ON
ENABLE
GND
EN
OFF
C1
C2
C1, C2: 1µF X5R CERAMIC CAPACITOR
FIGURE 1. TYPICAL APPLICATION
May 27, 2011
FN7845.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. 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
ISL9021A
Block Diagram
PASS ELEMENT
VIN
EN
VOUT
SHORT-CIRCUIT
TEMP
SENSOR
CONTROL
LOGIC
PROTECTION
THERMAL PROTECTION
SOFT-START
VOLTAGE
AND
REFERENCE
GENERATOR
+
BANDGAP
GND
Pin Configurations
Pin Descriptions
PIN µTDFN WLCSP
ISL9021A
(6 LD 1.6x1.6 µTDFN)
TOP VIEW
NAME PIN #
PIN #
DESCRIPTION
VIN
1
B1
IC Supply/LDO Input. Connect a 1µF
capacitor to GND.
6
5
4
VIN
NC
EN
1
2
3
VO
NC
GND
EN
2, 5
4
-
No Connect.
NC
A2
A1
System ground pin.
GND
3
LDO Enable. When this signal goes high,
the LDO is turned on.
ISL9021A
(4 BALL 2X2 WLCSP)
TOP VIEW
VO,
VOUT
6
-
B2
-
LDO Output. Connect a 1µF to 4.7µF
capacitor to GND.
PAD
For µTDFN package option only. Connect it
to the system ground.
GND
EN
VOUT
VIN
A2
A1
B2
B1
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2
ISL9021A
Ordering Information
PART NUMBER
PART
V
Voltage
(V)
TEMP RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
O
(Notes 1, 4)
MARKING
ISL9021AIINZ-T (Note 2)
ISL9021AIIMZ-T (Note 2)
ISL9021AIIKZ-T (Note 2)
ISL9021AIIFZ-T (Note 2)
ISL9021AIICZ-T (Note 2)
ISL9021AIIBZ-T (Note 2)
ISL9021AIIWZ-T (Note 2)
ISL9021AIRUNZ-T (Note 3)
ISL9021AIRUMZ-T (Note 3)
ISL9021AIRUKZ-T (Note 3)
ISL9021AIRUJZ-T (Note 3)
ISL9021AIRUFZ-T (Note 3)
ISL9021AIRUCZ-T (Note 3)
ISL9021AIRUBZ-T (Note 3)
ISL9021AIRUWZ-T (Note 3)
NOTES:
021N
3.3
3.0
2.85
2.5
1.8
1.5
1.2
3.3
3.0
2.85
2.8
2.5
1.8
1.5
1.2
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
4 Ball 2x2 WLCSP
4 Ball 2x2 WLCSP
4 Ball 2x2 WLCSP
4 Ball 2x2 WLCSP
4 Ball 2x2 WLCSP
4 Ball 2x2 WLCSP
4 Ball 2x2 WLCSP
6 Ld µTDFN
W2X2.4
021M
021K
021F
021C
021B
021W
V6
W2X2.4
W2X2.4
W2X2.4
W2X2.4
W2X2.4
W2X2.4
L6.1.6X1.6
L6.1.6X1.6
L6.1.6X1.6
L6.1.6X1.6
L6.1.6X1.6
L6.1.6X1.6
L6.1.6X1.6
L6.1.6X1.6
V5
6 Ld µTDFN
V4
6 Ld µTDFN
V3
6 Ld µTDFN
V2
6 Ld µTDFN
S6
6 Ld µTDFN
V0
6 Ld µTDFN
V7
6 Ld µTDFN
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free WLCSP and BGA packaged products employ special Pb-free material sets; molding compounds/die attach materials and
SnAgCu - e1 solder ball terminals, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free
WLCSP and BGA packaged products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate -
e4 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 ISL9021A. For more information on MSL please see techbrief TB363.
FN7845.0
May 27, 2011
3
ISL9021A
Absolute Maximum Ratings
Thermal Information
Supply Voltage (VIN). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.5V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (VIN + 0.3)V
Thermal Resistance (Typical)
4 Ball WLCSP (Note 5) . . . . . . . . . . . . . . . . .
6 Lead µTDFN (Notes 6, 7) . . . . . . . . . . . . .
θ
(°C/W)
135.64
230
θ
(°C/W)
N/A
93
JA
JC
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Ambient Temperature Range (T ) . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
A
Supply Voltage (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 to 5.5V
IN
ESD Rating
Human Body Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5000V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2200V
Latch-Up Passed at +85°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
5. θ is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
JA
Brief TB379.
6. θ is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
JA
7. For θ , the “case temp” location is taken at the package top center.
JC
Electrical Specifications T = -40°C to +85°C; V = (V + 0.5V) to 5.5V with a minimum V of 1.5V; C = 1µF; C = 1µF. Boldface
A
IN
O
IN
IN
O
limits apply over the operating temperature range, -40°C to +85°C.
MIN
MAX
PARAMETER
DC CHARACTERISTICS
Supply Voltage
SYMBOL
TEST CONDITIONS
(Note 10) TYP (Note 10) UNIT
V
1.5
1.3
5.5
1.5
V
V
IN
V
Undervoltage Lockout
V
V
V
Rising
Falling
1.425
1.375
35
IN
UVLO+
IN
IN
Threshold
V
V
UVLO-
Ground Current
I
Output Enabled; I = 0; V = 1.5V to 5.5V
IN
50
µA
µA
%
DD
O
Shutdown Current
Output Voltage Accuracy
I
V
V
V
= 5.5V, EN = Low, I = 0
0.1
1.0
DDS
IN
IN
IN
O
= V + 0.5V to 5.5V, I = 1mA to 250mA, T = +25°C
-0.8
-1.8
250
260
+0.8
+1.8
O
O
J
= V + 0.5V to 5.5V, I = 1mA to 250mA, T = -40°C to +125°C
%
O
O
J
Maximum Output Current
Internal Current Limit
I
Continuous
mA
mA
mV
°C
°C
MAX
I
LIM
Dropout Voltage (Notes 8, 9)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
AC CHARACTERISTICS
V
I
= 250mA; V > 1.8V
150
160
20
250
DO
SD
O
O
T
Ripple Rejection (Note 8)
V
V
V
V
= 4.5V, V = 3.3V @ 1kHz
60
75
50
dB
dB
dB
IN
IN
IN
IN
O
= 4.5V, V = 3.3V @ 10kHz
O
= 4.5V, V = 3.3V @ 1MHz
O
Output Noise Voltage (Note 8)
= 4.2V, T = +25°C, BW = 10Hz to 100kHz, I = 10mA
8.5*V
O
µV
RM
S
A
O
DEVICE START-UP CHARACTERISTICS
Device Enable Time
t
Time from assertion of the EN pin to when the output voltage
250
30
600
60
µs
EN
reaches 95% of the V (nom)
O
LDO Soft-start Ramp Rate
t
Slope of linear portion of LDO output voltage ramp during start-up
µs/V
SSR
FN7845.0
May 27, 2011
4
ISL9021A
Electrical Specifications T = -40°C to +85°C; V = (V + 0.5V) to 5.5V with a minimum V of 1.5V; C = 1µF; C = 1µF. Boldface
A
IN
O
IN
IN
O
limits apply over the operating temperature range, -40°C to +85°C. (Continued)
MIN
MAX
PARAMETER
EN LOGIC CHARACTERISTICS
Input Low Voltage
SYMBOL
TEST CONDITIONS
(Note 10) TYP (Note 10) UNIT
V
0.4
0.1
V
V
IL
Input High Voltage
Input Leakage Current
NOTES:
V
1.1
IH
I
I
µA
IL, IH
8. Limits established by characterization and are not production tested.
9. Dropout voltage is measured as V - V , when V is 4% lower than the value of V
O
IN
O
O
10. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Typical Operating Performance
45
40
35
30
25
20
15
10
5
45
40
35
30
25
20
15
10
5
T = +85°C
T = +45°C
T = +85°C
T = ROOM TEMP
T = ROOM TEMP
T = +45°C
T = 0°C
T = 0°C
T = -25°C
T = -25°C
T = -40°C
T = -40°C
0
0
1.5
2.5
3.5
4.5
5.5
1.5
2.5
3.5
4.5
5.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
FIGURE 3. QUIESCENT CURRENT vs INPUT VOLTAGE
FIGURE 2. QUIESCENT CURRENT vs INPUT VOLTAGE
(V = 0.9V)
(V
= 1.85V)
OUT
OUT
1.95
1.90
1.85
1.80
1.75
1.70
1.65
1.60
50
40
30
20
10
0
T = ROOM TEMP
T = +45°C
T = +85°C
+25°C
-40°C
+85°C
T = 0°C
T = -25°C
T = -40°C
-10
3.5
4.0
4.5
5.0
5.5
6.0
0
50
100
150
200
250
300
INPUT VOLTAGE (V)
Io (mA)
FIGURE 5. LOAD REGULATION vs TEMPERATURE
(V = 1.85V)
FIGURE 4. QUIESCENT CURRENT vs INPUT VOLTAGE
(V = 3.3V)
OUT
OUT
FN7845.0
May 27, 2011
5
ISL9021A
Typical Operating Performance(Continued)
2.00
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
1.95
+25°C
+25°C
1.90
+85°C
1.85
1.80
+85°C
-40°C
1.75
1.70
1.65
1.60
1.55
1.50
-40°C
0
50
100
150
Io (mA)
200
250
300
2.5
3.5
4.5
(V)
5.5
6.5
V
IN
FIGURE 7. LOAD REGULATION vs TEMPERATURE (V
= 3.3V)
FIGURE 6. LINE REGULATION vs TEMPERATURE (V
= 1.85V)
OUT
OUT
3.50
3.45
1.05
1.00
3.40
+25°C
0.95
+85°C
+25°C
3.35
3.30
3.25
3.20
3.15
3.10
3.05
3.00
+85°C
0.90
0.85
-40°C
0.80
-40°C
0.75
0.70
0.65
0.60
3.5
4.0
4.5
5.0
5.5
6.0
0
50
100
150
200
250
300
V
(V)
Io (mA)
IN
FIGURE 9. LOAD REGULATION vs TEMPERATURE (V
= 0.9V)
FIGURE 8. LINE REGULATION vs TEMPERATURE (V
= 3.3V)
OUT
OUT
V
= 2.7V
IN
1.00
C
= 1µF
OUT
V
= 1.85V
OUT
V
OUT
0.95
+25°C
+85°C
0.90
0.85
0.80
0.75
0.70
-40°C
I
OUT
I
= 1mA TO 250mA
OUT
3.0
3.5
4.0
4.5
(V)
5.0
5.5
6.0
V
IN
FIGURE 11. LOAD TRANSIENT RESPONSE
FIGURE 10. LINE REGULATION vs TEMPERATURE (V
= 0.9V)
OUT
FN7845.0
May 27, 2011
6
ISL9021A
Typical Operating Performance(Continued)
V
= 2.7V
IN
C
= 4.7µF
OUT
V
= 1.85V
OUT
V
OUT
I
OUT
I
= 1mA TO 250mA
OUT
FIGURE 12. LOAD TRANSIENT RESPONSE
FIGURE 13. ENABLE FUNCTION (V = 3.6V, V
IN
= 1.85V, C
OUT OUT
1µF)
-20
V
= 4.5VDC + 50mVAC
IN
-30
-40
-50
-60
-70
-80
-90
C
= 1µF
OUT
I
= 10mA
O
I
= 0A
1k
O
100
10k
100k
1M
FREQUENCY (Hz)
FIGURE 14. POWER SUPPLY REJECTION vs FREQUENCY
FN7845.0
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7
ISL9021A
The ISL9021A’s reverse current protection is intended to block
reverse conduction if output voltage is higher than input voltage.
Functional Description
The ISL9021A is a high performance low-dropout regulator (LDO)
with 250mA sourcing capability. The extra low ground current
makes this part a good choice for handheld product applications.
The device also incorporates overcurrent, thermal shutdown,
reverse current protections, and soft-start features.
Input and Output Capacitors
The ISL9021A provides a linear regulator that has low quiescent
current, fast transient response, and overall stable operation
across the recommended operating conditions. A ceramic
capacitor (X5R or X7R) with a capacitance of 1µF to 4.7µF with
an ESR up to 400mΩ is suitable for the ISL9021A to maintain its
output stability. The ground connection of the output capacitor
should be routed directly to the GND pin of the device, and also
placed close to the IC. Similarly for the input capacitor, usually a
1µF ceramic capacitor (X5R or 7R) is suitable for most cases, but
if a large, fast rising load transient condition is expected, a higher
value input capacitor may be necessary to achieve satisfactory
performance.
Thermal shutdown protects the device against overheating.
Soft-start limits the start-up input current surges. In some
applications, the output voltage may be externally pulled higher
than the input, or the input voltage could be connected to ground,
or connected to some voltage lower than the output side. The
ISL9021A features reverse current protection; that can block the
reverse current from output to input.
Enable Control
The ISL9021A has an enable pin. When EN is low, the IC is in
shutdown mode. In this condition, all on-chip circuits are off, and
the device draws minimum current, typically less than
0.1µA(typ). Driving this pin high will turn on the device.
Board Layout Recommendations
A good PCB layout is an important step to achieve good
performance. It is recommended to design the board with
separate ground planes for input and output, and connect both
ground planes at the GND pin of the IC. Consideration should be
taken when placing the components and routing the trace to
minimize the ground impedance, and keep the parasitic
inductance low. Usually the input/output capacitors should be
placed as close to the IC as possible with a good ground
connection.
LDO Protections
The ISL9021A offers several protection functions, making it ideal for
use in battery-powered applications. The ISL9021A provides
short-circuit protection by limiting the output current at current limit
of 260mA (min). If the short circuit lasts long enough, the die
temperature increases, and the over-temperature protection circuit
will shut down the output. When the die temperature reaches about
+145°C, thermal protection starts to work with output being loaded
with at least 50mA. Once the die temperature drops to about
+110°C, the LDO will resume operation beginning with a soft-start.
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.
DATE
REVISION
FN7845.0
CHANGE
May 27, 2011
Initial Release
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products
address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks.
Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a
complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page
on intersil.com: ISL9021A
To report errors or suggestions for this datasheet, please go to: www.intersil.com/askourstaff
FITs are available from our website at: http://rel.intersil.com/reports/search.php
FN7845.0
May 27, 2011
8
ISL9021A
Package Outline Drawing
L6.1.6x1.6
6 LEAD ULTRA THIN DUAL FLAT NO-LEAD COL PLASTIC PACKAGE (UTDFN COL)
Rev 1, 11/07
2X 1.00
1.60
A
PIN #1 INDEX AREA
6
6
4X 0.50
PIN 1
INDEX AREA
B
1
3
5X 0 . 40 ± 0 . 1
1X 0.5 ±0.1
1.60
(4X)
0.15
4
6
0.10 M C A B
TOP VIEW
4
0.25 +0.05 / -0.07
BOTTOM VIEW
( 6X 0 . 25 )
SEE DETAIL "X"
( 1X 0 .70 )
0 . 55 MAX
C
0.10
BASE PLANE
SEATING PLANE
C
0.08
C
( 1 . 4 )
SIDE VIEW
0 . 2 REF
C
( 5X 0 . 60 )
0 . 00 MIN.
0 . 05 MAX.
DETAIL "X"
( 4X 0 . 5 )
TYPICAL RECOMMENDED LAND PATTERN
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
3. Unless otherwise specified, tolerance : Decimal ± 0.05
4. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
Tiebar shown (if present) is a non-functional feature.
5.
6.
The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
FN7845.0
May 27, 2011
9
ISL9021A
Wafer Level Chip Scale Package
(WLCSP 0.4mm Ball Pitch)
W2x2.4
2x2 ARRAY 4 BALL WAFER LEVEL CHIP SCALE PACKAGE
SYMBOL
MILLIMETERS
0.44 Min, 0.495 Nom, 0.55 Max
0.190 ±0.030
D
A
A1
A2
b
0.305 ±0.025
E
0.270 ±0.030
D
1.155 ±0.020
D1
E
0.400 BASIC
PIN 1
TOP VIEW
0.975 ±0.020
E1
e
0.400 BASIC
0.400 BASIC
SD
SE
0.200 BASIC
0.00 BASIC
NUMBER OF BUMPS: 4
Rev. 2 6/08
A2
NOTES:
1. All dimensions are in millimeters.
A
A1
b
SIDE VIEW
e ( D1 )
2
SE
e ( E1 )
1
B
A
b
SD
BOTTOM VIEW
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FN7845.0
May 27, 2011
10
相关型号:
ISL9021AIIUZ-T
250mA Single LDO with Low IQ, Low Noise and High PSRR LDO; uTDFN6, WLCSP4; Temp Range: -40° to 85°C
RENESAS
ISL9021AIRUBZ-T
250mA Single LDO with Low IQ, Low Noise and High PSRR LDO; uTDFN6, WLCSP4; Temp Range: -40° to 85°C
RENESAS
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