ISL8014AIRZ Intersil, ISL8014AIRZ Datasheet - Page 14

• Manufacturer Part Number: ISL8014AIRZ
• Description: IC REG SYNC BUCK 4A 16QFN
• Manufacturer: Intersil
• Type: Step-Down (Buck), PFM/PWM - Current Moder

Specifications of ISL8014AIRZ

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 5.5 V
• Current - Output: 4A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Output Voltage Selection
The output voltage of the regulator can be programmed
via an external resistor divider that is used to scale the
output voltage relative to the internal reference voltage
and feed it back to the inverting input of the error
amplifier. Refer to Figure 1.
The output voltage programming resistor, R
on the value chosen for the feedback resistor and the
desired output voltage of the regulator. The value for the
feedback resistor is typically between 10kΩ and 100kΩ,
as shown in Equation 2.
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Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to
web to make sure you have the latest Rev.
R
3
11/25/09
=
12/3/09
DATE
----------------------------------
V
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
OUT
R
2
⋅
0.8V
–
0.8V
For information regarding Intersil Corporation and its products, see
REVISION
FN8091.1
FN8091.0
in the quality certifications found at
14
www.intersil.com/products
For additional products, see
In the “Features” section on page 1, changed “Pin Compatible to ISL8013” to “Pin Compatible
to ISL8013A”
Initial Release.
ISL8014A
3
, will depend
(EQ. 2)
ISL8014A
for a complete list of Intersil product families.
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If the output voltage desired is 0.8V, then R
unpopulated and R
current from VIN to LX. It is recommended to preload the
output with 10µA minimum. For better performance, add
47pF in parallel with R
Input Capacitor Selection
The main functions for the input capacitor are to provide
decoupling of the parasitic inductance and to provide
filtering function to prevent the switching current flowing
back to the battery rail. Two 22µF X5R or X7R ceramic
capacitors are a good starting point for the input
capacitor selection.
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CHANGE
2
is shorted. There is a leakage
2
(100kΩ).
www.intersil.com
3
December 4, 2009
is left
FN7525.1