ISL8009A is an efficient, single -chip, synchronous antihypertensive DC/DC regulator that provides continuous output current of up to 1.5A. It is to generate a low output voltage to 0.8V. The power supply voltage range is 2.7V to 5.5V allowed to use a single lithium battery, three nickel -metal hydride batteries or adjusting 5V input. ISL8009A uses the current mode to control the structural structure of the extremely low duty -occupying ratio under high load. The frequency of fast transient response and excellent loops is stable. With a flexible compulsory PWM working method selection as low as 17 micro -static mode and automatic PFM/PWM current to achieve high -power conversion efficiency load conditions at light, thereby maximizing the battery life. 1.6MHz pulse width modulation (PWM) switch frequency allows small external components. ISL8009A integrates a pair of low -conducting PR channels and MOSFETs inside N channels to maximize efficiency and minimize external component counts. 100 When the duty cycle is 1.5A, the operation allows a voltage drop output current with less than 400mV. ISL8009A is turning on the power. The timer output can be reset through RSI. When shutting down, ISL8009A uses a 100Ω discharge output capacitor resistor. Other functions include internal digital soft startup, enabled for power order, over -current protection and thermal protection shutdown. ISL8009A uses a 2mmx3mm 8 LD DFN packaging maximum height of 1mm. The entire converter covers an area of more than 1 square centimeter.

Features

High -efficiency synchronous antihypertensive regulator efficiency of up to 95%

2ms reset timer

2.7V to 5.5V power supply voltage [123 123 ]

Output accuracy exceeding temperature/load/line 3%

1.5A Guarantee output current

17 micro -static power supply current in PFM mode

optional optional The compulsory pulse width modulation mode and power factor modulation mode

Logical control off the current is less than 1 Wei'an

At 1.5A, the maximum duty cycle ratio of the lowest dropout rate is 90%

Internal current mode compensation

Internal digital soft launch

Peak current limit, short circuit protection

Excessive protection

Enable

Soft -electricity disable

Small 8 LD 2mmx3mm DFN

Leadless (conforming to ROHS)

Application

DC/DC POL module

μC/μP, FPGA, and DSP power supply

Intellectual DC/DC module of routers and switches

Portable typeInstrument

Test and measurement system

Note:

1. For the volume specifications, please refer to TB347.

2. These Intersil lead -free plastic packaging products use special lead -free materials, mold/mold connection materials, and 100%matte

Tin -plated board increase (E3 side processing processing , Comply with the ROHS standard, compatible with SNPB and lead -free welding operations). Intels Silicon

Leadless products are classified as MSL at the temperature of lead-free peak return welding, reaching or exceeding the lead requirements of IPC/JEDEC J STD-020.

3. For humidity sensitivity level (MSL), see the equipment information page of ISL8009A. For more information about MSL, see Techbrief TB363

Absolutely maximum rated value (Reference GND) heat information

Power voltage (vehicle identification number). -0.3 il to 6.5 volts

EN, RSI, SKIP, VFB, POR. -0.3v to vehicle identification number+0.3V

lx. -1.5 to 6.5 volts

Vipples tremor. -0.3 Volt to 2.7 volts

Recommended operating conditions

Vehicle recognition number of the power supply voltage range. 2.7 volts to 5.5 volts

The load current range. 0A to 1.5A

Environmental temperature range. -40 ° C to+85 ° C

Thermal resistance (typical value) θJa (degrees Celsius/tile) θJC (degrees Celsius/tile)

8 LD 2X3 DFN (Note 4, 5). 55 5.5 points

The temperature range. -55 ° C to+125 ° C

Storage temperature range. -65 ° C to+150 ° C

Lead -free return curve.

Note: Do not run for a long time under the maximum rated value listed. Under these conditions, it may adversely affect the product

reliability, causing failure within the range of warranty.

Note:

4. θja is measured in free air, which is installed on high -efficiency thermal guidance test boards with direct connection " characteristics. See the technology brief explanation TB379.

5. For θjc