ISL9014A is a high performance dual LDO capable of
sourcing 300mA current from both outputs. The device has a
low standby current and high-PSRR and is stable with output
capacitance of 1µF to 10µF with ESR of up to 200mΩ.
A reference bypass pin allows an external capacitor for
adjusting a noise filter for low noise and high PSRR
applications.
The quiescent current is typically only 45µA with both LDOs
enabled and active. Separate enable pins control each
individual LDO output. When both enable pins are low, the
device is in shutdown, typically drawing less than 0.1µA.
Several combinations of voltage outputs are standard.
Output voltage options for each LDO range from 1.5V to
3.3V. Other output voltage options are available on request.
Pinout
ISL9014A
(10 LD 3x3 DFN)
TOP VIEW
VIN
EN1
EN2
CBYP
NC
1
2
3
4
5
10
VO1
9
VO2
8
NC
NC
7
6
GND
FN6438.1
Features
• Integrates two high performance LDOs
- VO1 - 300mA output
- VO2 - 300mA output
• Excellent transient response to large current steps
• Excellent load regulation: <1% voltage change across full
range of load current
(Notes 1, 2, 3)PART MARKING VO1 VOLTAGE VO2 VOLTAGE TEMP RANGE (°C)
ISL9014AIRNNZDKNA3.3V3.3V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRNJZDKMA3.3V2.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRNFZDKLA3.3V2.5V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRNCZDKKA3.3V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRMNZDKJA3.0V3.3V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRMMZDKHA3.0V3.0V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRMGZDKGA3.0V2.7V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRLLZDKFA2.9V2.9V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRKNZDKDA2.85V3.3V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRKKZDKCA2.85V2.85V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRKJZDKBA2.85V2.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRKFZDJYA2.85V2.5V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRKPZDKEA2.85V1.85V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRKCZDJWA2.85V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRJNZDJTA2.8V3.3V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRJMZDJSA2.8V3.0V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRJRZDJVA2.8V2.6V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRJCZDJRA2.8V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRJBZDJPA2.8V1.5V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRGPZDJNA2.7V1.85V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRGCZDJMA2.7V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRFJZDJLA2.5V2.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRFDZDJKA2.5V2.0V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRFCZDJJA2.5V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRPLZDKPA1.85V2.9V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRPPZDKRA1.85V1.85V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRCJZDJHA1.8V2.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRCCZDJGA1.8V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRBLZDJFA1.5V2.9V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRBJZDJEA1.5V2.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRBCZDJDA1.5V1.8V-40 to +8510 Ld 3x3 DFNL10.3x3C
ISL9014AIRBBZDJCA1.5V1.5V-40 to +8510 Ld 3x3 DFNL10.3x3C
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. For availability and lead time of devices with voltage combinations not listed in the table, 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.
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:
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
4. θ
JA
Tech Brief TB379.
, “case temperature” location is at the center of the exposed metal pad on the package underside. See Tech Brief TB379.
The ISL9014A contains all circuitry required to implement
two high performance LDO’s. High performance is achieved
through a circuit that delivers fast transient response to
varying load conditions. In a quiescent condition, the
ISL9014A adjusts its biasing to achieve the lowest standby
current consumption.
The device also integrates current limit protection, smart
thermal shutdown protection, staged turn-on and soft-start.
Smart Thermal shutdown protects the device against
overheating. Staged turn-on and soft-start minimize start-up
input current surges without causing excessive device
turn-on time.
Power Control
The ISL9014A has two separate enable pins (EN1 and EN2)
to individually control power to each of the LDO outputs.
When both EN1 and EN2 are low, the device is in shutdown
mode. During this condition, all on-chip circuits are off, and
the device draws minimum current, typically less than 0.1
µA.
QEN1
VO2
QEN2
VOLTAGE
REFERENCE
GENERATOR
~1.0V
1.00V
When one or both of the enable pins are asserted, the
device first polls the output of the UVLO detector to ensure
that VIN voltage is at least about 2.1V. Once verified, the
device initiates a start-up sequence. During the start-up
sequence, trim settings are first read and latched. Then,
sequentially, the bandgap, reference voltage and current
generation circuitry power up. Once the references are
stable, a fast-start circuit quickly charges the external
reference bypass capacitor (connected to the CBYP pin) to
the proper operating voltage. After the bypass capacitor has
been charged, the LDO’s power up.
If EN1 is brought high, and EN2 goes high before the VO1
output stabilizes, the ISL9014A delays the VO2 turn-on until
the VO1 output reaches its target level.
If EN2 is brought high, and EN1 goes high before VO2 starts
its output ramp, then VO1 turns on first and the ISL9014A
delays the VO2 turn-on until the VO1 output reaches its
target level.
9
FN6438.1
March 11, 2008
Page 10
If EN2 is brought high, and EN1 goes high after VO2 starts
www.BDTIC.com/Intersil
its output ramp, then the ISL9014A immediately starts to
ramp up the VO1 output.
If both EN1 and EN2 are brought high at the same time, the
VO1 output has priority, and is always powered up first.
During operation, whenever the VIN voltage drops below
about 1.8V, the ISL9014A immediately disables both LDO
outputs. When VIN rises back above 2.1V, the device
re-initiates its start-up sequence and LDO operation will
resume automatically.
Reference Generation
The reference generation circuitry includes a trimmed
bandgap, a trimmed voltage reference divider, a trimmed
current reference generator, and an RC noise filter. The filter
includes the external capacitor connected to the CBYP pin.
A 0.01
µF capacitor connected CBYP implements a 100Hz
lowpass filter, and is recommended for most high
performance applications. For the lowest noise application, a
0.1
µF or greater CBYP capacitor should be used. This filters
the reference noise to below the 10Hz to 1kHz frequency
band, which is crucial in many noise-sensitive applications.
The bandgap generates a zero temperature coefficient (TC)
voltage for the reference divider. The reference divider
provides the regulation reference and other voltage
references required for current generation and
over-temperature detection.
The current generator outputs references required for
adaptive biasing as well as references for LDO output
current limit and thermal shutdown determination.
LDO Regulation and Programmable Output Divider
The LDO Regulator is implemented with a high-gain
operational amplifier driving a PMOS pass transistor. The
design of the ISL9014A provides a regulator that has low
quiescent current, fast transient response, and overall
stability across all operating and load current conditions.
LDO stability is guaranteed for a 1
capacitor that has a toleranc e better than 2 0% and ESR less
than 200m
capacitor. Unless limited by the application, use of an output
capacitor value above 4.7
performance improvement is minimal.
Soft-start circuitry integrated into each LDO limits the initial
ramp-up rate to about 30
ISL9014A provides short-circuit protection by limiting the
output current to about 475mA.
Each LDO uses an independently trimmed 1V reference. An
internal resistor divider drops the LDO output voltage down
to 1V. This is compared to the 1V reference for regulation.
The resistor division ratio is programmed in the factory .
Ω. The design is performance-optimized for a 1µF
µF is not recommended as LDO
µs/V to minimize current surge. The
µF to 10µF output
Overheat Detection
The bandgap outputs a proportional-to-temperature current
that is indicative of the temperature of the silicon. This
current is compared with references to determine if the
device is in danger of damage due to overheating. When the
die temperature reaches about +145°C, one or both of the
LDO’s momentarily shut down until the die cools sufficiently.
In the overheat condition, only the LDO sourcing more than
50mA will be shut off. This does not affect the operation of
the other LDO. If both LDOs source more than 50mA and an
overheat condition occurs, both LDO outputs are disabled.
Once the die temperature falls back below about +110°C,
the disabled LDO(s) are re-enabled and soft-start
automatically takes place.
10
FN6438.1
March 11, 2008
Page 11
Dual Flat No-Lead Plastic Package (DFN)
www.BDTIC.com/Intersil
(DAT UM B )
6
INDEX
AREA
(DATUM A)
NX (b)
5
SECTION "C-C"
6
INDEX
AREA
SEATING
PLANE
NX L
8
A
C
D
TOP
VIEW
SIDE VIEW
D2
D2/2
12
N
N-1
e
(Nd-1)Xe
REF .
BOTTOM VIEW
(A1)
2X
A3
E2/2
NX b
5
C
L
e
CC
FOR ODD TERMINAL/SIDE
87
0.10
ABC0.10
2X
0.10
E
//
A
NX k
E2
M
9
TERMINAL TIP
CB
0.10
0.08
L
L10.3x3C
10 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE
MILLIMETERS
SYMBOL
A0.850.900.95A1--0.05A30.20 REF-
b0.200.250.305, 8
D3.00 BSCD22.332.382.437, 8
C
E3.00 BSCE21.591.641.697, 8
C
e0.50 BSC-
k0.20- - L0.350.400.458
N102
Nd53
NOTES:
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
3. Nd refers to the number of terminals on D.
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identi fier may be
BAC
either a mold or mark feature.
7. Dimensions D2 and E2 are for the exposed pads which provide
improved electrical and thermal performance.
8. Nominal dimensions are provided to assist with PCB Land
Pattern Design efforts, see Intersil Technical Brief TB389.
9. COMPLIANT TO JEDEC MO-229-WEED-3 except for
dimensions E2 & D2.
NOTESMINNOMINALMAX
Rev. 1 4/06
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implic atio n or other wise u nde r any p a tent or patent rights of Intersil or its subs idi aries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11
FN6438.1
March 11, 2008
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