October 5, 2006
Monolithic 1A Step-Down Regulator with
Low Quiescent Current
The ISL97536 is a synchronous, integrated FET 1A
step-down regulator with internal compensation. It operates
with an input voltage range from 2.5V to 6V, which
accommodates supplies of 3.3V, 5V, or a Li-Ion battery
source. The output can be externally set from 0.8V to VIN
with a resistive divider.
The ISL97536 features PWM control with a 1.4MHz typical
switching frequency. The typical no load quiescent current is
only 500µA. Additional features include a 100ms Power-On-
Reset output, <1µA shutdown current, short-circuit
protection, and over-temperature protection.
The ISL97536 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15in2 of PCB
area with components on one side only. The 10 Ld MSOP
package is specified for operation over the full -40°C to
+85°C temperature range.
• Less than 0.15in2 footprint for the complete 1A converter
• Components on one side of PCB
• Max height 1.1mm MSOP10
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 95% efficiency
• <1µA shutdown current
• 500µA quiescent current
• Hiccup mode overcurrent and over-temperature protection
• Pb-free plus anneal available (RoHS compliant)
• PDA and pocket PC computers
• Bar code readers
• Cellular phones
PART TAPE &
MARKING REEL PACKAGE DWG. #
- 10 Ld MSOP MDP0043
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
13” 10 Ld MSOP MDP0043
(1k pcs) (Pb-free)
13” 10 Ld MSOP MDP0043
(2.5k pcs) (Pb-free)
Pinout and Typical Application Diagram
(10 LD MSOP)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
* VO = 0.8V * (1 + R1/R2)
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2006. All Rights Reserved
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