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PDF ISL8016 Data sheet ( Hoja de datos )
| Número de pieza | ISL8016 | |
| Descripción | 6A Low Quiescent Current High Efficiency Synchronous Buck Regulator | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISL8016 (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
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6A Low Quiescent Current High Efficiency Synchronous
Buck Regulator
ISL8016
The ISL8016 is a high efficiency, monolithic, synchronous
step-down DC/DC converter that can deliver up to 6A continuous
output current from a 2.7V to 5.5V input supply. The output
voltage is adjustable from 0.6V to VIN. With an adjustable current
limit, reverse current protection, pre-bias start and over
temperature protection the ISL8016 offers a highly robust power
solution. It uses current control architecture to deliver fast
transient response and excellent loop stability.
The ISL8016 integrates a pair of low ON-resistance P-Channel
and N-Channel internal MOSFETs to maximize efficiency and
minimize external component count. 100% duty-cycle operation
allows less than 200mV dropout at 6A output current. Adjustable
frequency and synchronization allow the ISL8016 to be used in
applications requiring low noise. Paralleling capability with
phase interleaving allows the IC to support >6A output current
while offering reduced input and output noise.
The ISL8016 can be configured for discontinuous or forced
continuous operation at light load. Forced continuous operation
reduces noise and RF interference while discontinuous mode
provides high efficiency by reducing switching losses at light loads.
The ISL8016 is offered in a space saving 20 Ld 3x4 QFN lead free
package with exposed pad lead frames for excellent thermal
performance. The complete converter occupies less than 0.15in2
area.
Various fixed output voltages are available upon request. See
Ordering Information on page 2 for more detail.
Features
• High Efficiency Synchronous Buck Regulator with up to 97%
Efficiency
• 1% Reference Accuracy Over-Temperature/Load/Line
• Fixed Output Voltage Option
• ±10% Output Voltage Margining
• Adjustable Current Limit
• Current Sharing Capable
• Start-up with Pre-Biased Output
• Internal Soft-Start - 1ms or Adjustable, Internal/External
Compensation
• Soft-Stop Output Discharge During Disabled
• Adjustable Frequency from 500kHz to 4MHz - Default at 1MHz
• External Synchronization up to 4MHz - Master to Slave Phase
Shifting Capability
• Peak current limiting, Hiccup Mode Short Circuit Protection
and Over-Temperature Protection‘
Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Portable Instruments
• Test and Measurement Systems
• Li-ion Battery Powered Devices
100
95
90 3.3VOUT PFM
85 3.3VOUT PWM
80
75
70
0.0
1.0 2.0 3.0 4.0 5.0
IOUT (A)
FIGURE 1. EFFICIENCY T = +25°C VIN = 5V
6.0
May 5, 2011
FN7616.1
1
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 page  
ISL8016
INPUT 2.7V TO 5.5V
C1
47µF
R1
100k
VIN
R4
196k
VIN PHASE
EN
ISL8016
(MASTER) PGND
PG
SYNCIN
SYNCOUT
FS
ISET
SGND
VFB
VSET
SS
COMP
C6
22nF
L1
1.0µH
C2
2 x 47µF
R2
200k
R3
100k
C4
470pF
R3
150k
C5
10pF
OUTPUT
1.8V/12A
C3*
10pF
INPUT 2.7V TO 5.5V
C7
47µF
C13
100pF
R5
249k
VIN PHASE
EN ISL8016
PG (SLAVE)
SYNCOUT
PGND
SYNCIN
FS
ISET
SGND
VFB
VSET
SS
COMP
L2
1.0µH
C8
2 x 47µF
* C3 is optional. Recommend
putting a placeholder for it. Check
loop analysis first before use.
FIGURE 3. TYPICAL APPLICATION DIAGRAM - MULTI CHIP CONFIGURATION 12A
5 FN7616.1
May 5, 2011
5 Page 
ISL8016
Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VIN = 5V,
EN = 3.3V, SYNCIN = VIN, L = 1.0µH, C1 = 2x22µF, C2 = 4x22µF, VOUT = 1.8V, IOUT = 0A to 6A. (Continued)
1.84
1.24
1.83
1.82
1.81
3A LOAD
0A LOAD
1.80
1.79
6A LOAD
1.782.5 3.0 3.5 4.0 4.5 5.0
VIN (V)
FIGURE 11. VOUT REGULATION vs VIN (PFM VOUT = 1.8V)
5.5
1.23
1.22
3.3VIN PWM MODE
1.21
3.3VIN PFM MODE
1.20
1.19 5VIN PWM MODE
5VIN PFM MODE
1.18
0.0 1.0 2.0 3.0 4.0 5.0 6.0
IOUT (A)
FIGURE 12. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.2V)
1.54
1.53
1.52
1.51
3.3VIN PWM MODE
5VIN PWM MODE
3.3VIN PFM MODE
1.50
1.49
5VIN PFM MODE
1.48
0.0 1.0 2.0 3.0 4.0 5.0 6.0
IOUT (A)
FIGURE 13. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.5V)
1.84
1.83
1.82
1.81
3.3VIN PWM MODE
5VIN PWM MODE
3.3VIN PFM MODE
1.80
1.79
5VIN PFM MODE
1.78
0.0 1.0 2.0 3.0 4.0 5.0 6.0
IOUT (A)
FIGURE 14. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.8V)
2.54
2.53
2.52
2.51
2.50
3.3VIN PWM MODE
5VIN PWM MODE
3.3VIN PFM MODE
2.49
5VIN PFM MODE
2.480.0 1.0 2.0 3.0 4.0 5.0 6.0
IOUT (A)
FIGURE 15. VOUT REGULATION vs LOAD (1MHz, VOUT = 2.5V)
3.37
3.36
3.35
5VIN PWM MODE
3.34
3.33
3.32
5VIN PFM MODE
3.31
0.0 1.0 2.0 3.0 4.0 5.0 6.0
IOUT (A)
FIGURE 16. VOUT REGULATION vs LOAD (1MHz, VOUT = 3.3V)
11 FN7616.1
May 5, 2011
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet ISL8016.PDF ] | |
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