廬
ISL97536
Data Sheet
November 2, 2007
FN6279.1
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 V
IN
with a resistive divider.
The ISL97536 features PWM control with a 1.4MHz typical
switching frequency. The typical no load quiescent current is
only 500碌A(chǔ). Additional features include a 100ms Power-On-
Reset output, <1碌A(chǔ) 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 0.15in
2
of PCB
area with components on one side only. The 10 Ld MSOP
package is specified for operation over the full -40擄C to
+85擄C temperature range.
Features
鈥?Less than 0.15in
2
footprint for the complete 1A converter
鈥?Components on one side of PCB
鈥?Max height 1.1mm MSOP10
鈥?100ms Power-On-Reset output (POR)
鈥?Internally-compensated voltage mode controller
鈥?Up to 95% efficiency
鈥?<1碌A(chǔ) shutdown current
鈥?500碌A(chǔ) quiescent current
鈥?Hiccup mode overcurrent and over-temperature protection
鈥?Pb-free (RoHS compliant)
Applications
鈥?PDA and pocket PC computers
鈥?Bar code readers
鈥?Cellular phones
鈥?Portable test equipment
Ordering Information
PART
NUMBER
(Note)
ISL97536IUZ
ISL97536IUZ-TK*
ISL97536IUZ-T*
PART
MARKING
7536Z
7536Z
7536Z
PACKAGE
(Pb-Free)
10 Ld MSOP
10 Ld MSOP
Tape and Reel
10 Ld MSOP
Tape and Reel
PKG. DWG.
#
MDP0043
MDP0043
MDP0043
鈥?Li-ion battery powered devices
鈥?Small form factor (SFP) modules
Pinout and Typical Application Diagram
ISL97536
(10 LD MSOP)
TOP VIEW
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is 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.
1 SGND
C
1
10碌F
V
O
(1.8V@600mA)
V
S
(2.5V-6V)
C
2
10碌F
2 PGND
3 LX
4 VIN
5 VDD
R
4
R
5
FB 10
VO 9
POR 8
EN 7
RSI 6
100k惟
100k惟
R
2
*
100k惟
R
1
*
124k惟
C
4
470pF
POR
EN
RSI
L
1
1.8碌H
R
3
100惟
C
3
0.1碌F
R
6
100k惟
* V
O
= 0.8V * (1 + R
1
/R
2
)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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