ISL8036 데이터 시트보기 (PDF) - Renesas Electronics
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ISL8036 Datasheet PDF : 26 Pages
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DATASHEET
ISL8036, ISL8036A
Dual 3A 1MHz/2.5MHz High Efficiency Synchronous Buck Regulator
FN6853
Rev 3.00
August 17, 2012
ISL8036, ISL8036A are integrated power controllers rated for
dual 3A output current or current sharing operation with a
1MHz (ISL8036)/2.5MHz (ISL8036A) step-down regulator,
which is ideal for any low power low-voltage applications. The
channels are 180° out-of-phase for input RMS current and EMI
reduction. It is optimized for generating low output voltages
down to 0.8V each. The supply voltage range is from 2.8V to
6V, allowing for the use of a single Li+ cell, three NiMH cells or
a regulated 5V input. The two channels are 180° out-of-phase,
and each one has a guaranteed minimum output current of
3A. They can be combined to form a single 6A output in the
current sharing mode. While in current sharing, the interleaved
PWM signals reduce input and output ripple.
The ISL8036, ISL8036A includes 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 250mV dropout voltage
at 3A each.
The ISL8036, ISL8036A offers an independent 1ms
Power-good (PG) timer at power-up. When shutdown, ISL8036,
ISL8036A discharges the output capacitor. Other features
include internal digital soft-start, enable for power sequence,
overcurrent protection, and thermal shutdown.
The ISL8036, ISL8036A is offered in a 24 Ld 4mmx4mm QFN
package with 1mm maximum height. The complete converter
occupies less than 1.5cm2 area.
Features
• 3A High Efficiency Synchronous Buck Regulator with up to
95% Efficiency
• 2% Output Accuracy Over-Temperature/Load/Line
• Internal Digital Soft-Start - 1.5ms
• 6A Current Sharing Mode Operation
• External Synchronization up to 6MHz
• Internal Current Mode Compensation
• Peak Current Limiting and Hiccup Mode Short Circuit
Protection
• Reverse Overcurrent Protection
Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Test and Measurement Systems
• Li-ion Battery Power Devices
• Bar Code Reader
Related Literature
• AN1616, “ISL8036CRSHEVAL1Z Current Sharing 6A Low
Quiescent Current High Efficiency Synchronous Buck
Regulator”
• AN1617, “ISL8036DUALEVAL1Z Dual 3A Low Quiescent
Current High Efficiency Synchronous Buck Regulator”
• AN1615, “ISL8036ACRSHEVAL1Z Current Sharing 6A Low
Quiescent Current High Efficiency Synchronous Buck
Regulator”
• AN1618, “ISL8036ADUALEVAL1Z Dual 3A Low Quiescent
Current High Efficiency Synchronous Buck Regulator”
100
90
80
3.3VOUT- PWM
70
60
50
40
0
1
2
3
4
5
6
OUTPUT LOAD (A)
FIGURE 1. EFFICIENCY vs LOAD, 1MHz 5VIN PWM, TA = +25°C
FN6853 Rev 3.00
August 17, 2012
Page 1 of 26
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