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PDF ADP2116 Data sheet ( Hoja de datos )
| Número de pieza | ADP2116 | |
| Descripción | Step-Down DC-to-DC Regulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Configurable, Dual 3 A/Single 6 A,
Synchronous, Step-Down DC-to-DC Regulator
ADP2116
FEATURES
Configurable 3 A/3 A or 3 A/2 A dual-output load
combinations or 6 A combined single-output load
High efficiency: up to 95%
Input voltage, VIN: 2.75 V to 5.5 V
Selectable fixed output voltage of 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V,
or 3.3 V, or adjustable output voltage to 0.6 V minimum
±1.5% accurate reference voltage
Selectable switching frequency of 300 kHz, 600 kHz, 1.2 MHz,
or synchronized from 200 kHz to 2 MHz
Optimized gate slew rate for reduced EMI
External synchronization input or internal clock output
Dual-phase, 180° phase-shifted PWM channels
Current mode for fast transient response
Pulse skip mode with light loads or forced PWM operation
Input undervoltage lockout (UVLO)
Independent enable inputs and power-good outputs
Overcurrent and thermal overload protection
Programmable soft start
32-lead, 5 mm × 5 mm LFCSP package
APPLICATIONS
Point-of-load regulation
Telecommunications and networking systems
Consumer electronics
Industrial and instrumentation
Medical
GENERAL DESCRIPTION
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The ADP2116 is a versatile, synchronous, step-down switching
regulator that satisfies a wide range of customer point-of-load
requirements. The two PWM channels can be configured to deliver
independent outputs at 3 A and 3 A (or at 3 A and 2 A) or can be
configured as a single interleaved output capable of delivering 6 A.
The two PWM channels are 180° phase shifted to reduce input
ripple current and input capacitance.
The ADP2116 provides high efficiency and can operate at
switching frequencies of up to 2 MHz. At light loads, the ADP2116
can be set to operate in pulse skip mode for higher efficiency or
in forced PWM mode for noise sensitive applications.
The ADP2116 is designed with an optimized slew rate to reduce
EMI emissions, allowing the device to power sensitive, high perfor-
mance signal chain circuits. The switching frequency can be set
to 300 kHz, 600 kHz, or 1.2 MHz, or it can be synchronized to an
external clock that minimizes the system noise. The bidirectional
TYPICAL APPLICATION CIRCUIT
VIN = 5V
100kΩ
PGOOD2
VOUT2 = 1.2V, 3A
47µF 100µF
22µF
2.2µH
SYNC
4.7kΩ
30kΩ 10nF
820pF
10Ω
1µF
EN2 EN1
VIN4
VIN1
VIN5
VIN2
VIN6
VIN3
PGOOD2
PGOOD1
SW1
SW3 ADP2116 SW2
SW4
PGND1
PGND3
PGND2
PGND4
FB1
FB2
V2SET
V1SET
SYNC/CLKOUT COMP1
COMP2
SS1
SS2
100kΩ
22µF
3.3µH
PGOOD1
VOUT1 = 2.5V, 3A
47µF 22µF
27kΩ
10nF 30kΩ
820pF
8.2kΩ
fSW = 600kHz
Figure 1.
100
VIN = 5.0V; VOUT = 2.5V
95 VIN = 5.0V; VOUT = 3.3V
90
85
80
75
70 VIN = 3.3V; VOUT = 1.2V
65
60
10
100 1k
LOAD CURRENT (mA)
fSW = 600kHz
10k
Figure 2. Typical Efficiency vs. Load Current
synchronization pin is also configurable as a 90° out-of-phase
output clock, providing the possibility for a stackable
multiphase power solution.
The ADP2116 input voltage range is from 2.75 V to 5.5 V and can
convert to a fixed output of 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, or 3.3 V
that can be set independently for each channel using external
resistors. If a resistor divider is used, the output voltage can be
set as low as 0.6 V. The ADP2116 operates over the −40°C to
+125°C junction temperature range.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
VDD to GND
VIN1, VIN2, VIN3, VIN4, VIN5, VIN6 to
PGND1, PGND2, PGND3, PGND4
EN1, EN2, SCFG, FREQ, SYNC/CLKOUT,
PGOOD1, PGOOD2, V1SET, V2SET,
COMP1, COMP2, SS1, SS2 to GND
FB1, FB2 to GND
SW1, SW2, SW3, SW4 to PGND1, PGND2,
PGND3, PGND4
PGND1, PGND2, PGND3, PGND4 to GND
VIN1, VIN2, VIN3, VIN4, VIN5, VIN6 to VDD
θJA, JEDEC 1S2P PCB, Natural Convection
Operating Junction Temperature Range
Storage Temperature Range
Maximum Soldering Lead
Temperature (10 sec)
Rating
−0.3 V to +6 V
−0.3 V to +6 V
−0.3 V to (VDD + 0.3 V)
−0.3 V to +3.6 V
−0.3 V to (VDD + 0.3 V)
±0.3 V
±0.3 V
34°C/W
−40°C to +125°C
−65°C to +150°C
260°C
ADP2116
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Absolute maximum ratings apply individually only, not in
combination.
ESD CAUTION
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Rev. 0 | Page 5 of 36
5 Page 
330
320
310
VIN = 2.75V
300
VIN = 5.5V
290
280
270
–50
–25
0 25 50 75
TEMPERATURE (°C)
100 125
Figure 20. Switching Frequency vs. Temperature, fSW = 300 kHz
ADP2116
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
–50
–25
ENABLE; VIN = 5.5V
ENABLE; VIN = 2.75V
DISABLE; VIN = 5.5V
DISABLE; VIN = 2.75V
0 25 50 75
TEMPERATURE (°C)
100 125
Figure 23. Enable/Disable Threshold vs. Temperature
660
640
620
VIN = 2.75V
600
VIN = 5.5V
580
560
540
–50
–25
0
25 50 75 100 125
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TEMPERATURE (°C)
Figure 21. Switching Frequency vs. Temperature, fSW = 600 kHz
2.8
2.7
VDD RISING
2.6
2.5 VDD FALLING
2.4
2.3
–50
–25 0
25 50 75 100
TEMPERATURE (°C)
Figure 24. UVLO Threshold vs. Temperature
125
1300
1280
1260
1240
1220
1200
1180
1160
1140
1120
1100
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
Figure 22. Switching Frequency vs. Input Voltage, fSW = 1.2 MHz
1300
1280
1260
1240
1220
VIN = 2.75V
1200
1180
VIN = 5.5V
1160
1140
1120
1100
–50
–25
0 25 50 75
TEMPERATURE (°C)
100 125
Figure 25. Switching Frequency vs. Temperature, fSW = 1.2 MHz
Rev. 0 | Page 11 of 36
11 Page | ||
| Páginas | Total 36 Páginas | |
| PDF Descargar | [ Datasheet ADP2116.PDF ] | |
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