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PDF ISL97536 Data sheet ( Hoja de datos )
| Número de pieza | ISL97536 | |
| Descripción | Monolithic 1A Step-Down Regulator | |
| Fabricantes | Intersil Corporation | |
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®
Data Sheet
October 5, 2006
ISL97536
FN6279.0
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.
Ordering Information
Features
• 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)
Applications
• PDA and pocket PC computers
• Bar code readers
• Cellular phones
PART
NUMBER
ISL97536IUZ
(Note)
PART TAPE &
PKG.
MARKING REEL PACKAGE DWG. #
7536Z
- 10 Ld MSOP MDP0043
(Pb-free)
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
ISL97536IUZ-TK 7536Z
(Note)
ISL97536IUZ-T 7536Z
(Note)
13” 10 Ld MSOP MDP0043
(1k pcs) (Pb-free)
13” 10 Ld MSOP MDP0043
(2.5k pcs) (Pb-free)
Pinout and Typical Application Diagram
ISL97536
(10 LD MSOP)
TOP VIEW
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.
C1
10µF
VO (1.8V@600mA)
VS (2.5V-6V)
L1
C2
10µF
1.8µH
R3
100Ω
C3
0.1µF
1 SGND
2 PGND
3 LX
4 VIN
5 VDD
FB 10
VO 9
POR 8
EN 7
RSI 6
R4 100kΩ
R2*
100kΩ
R1*
124kΩ
C4
470pF
POR
EN
RSI
R6
100kΩ
R5 100kΩ
* VO = 0.8V * (1 + R1/R2)
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL97536
Performance Curves and Waveforms (Continued)
All waveforms are taken at VIN = 3.3V, VO = 1.8V, IO = 600mA with component values shown on page 1 at room ambient temperature, unless
otherwise noted.
VOUT
VIN
IIN
FIGURE 7. START-UP AT IO = 600mA
LX
(2V/DIV)
IL
(0.5A/DIV)
∆VO
(10mV/DIV)
0.5µs/DIV
FIGURE 8. PWM STEADY-STATE OPERATION (IO = 600mA)
SYNC
(2V/DIV)
LX
(2V/DIV)
IL
(0.5A/DIV)
0.2µs/DIV
FIGURE 9. EXTERNAL SYNCHRONIZATION TO 2MHz
SYNC
(2V/DIV)
LX
(2V/DIV)
IL
(0.5A/DIV)
20ns/DIV
FIGURE 10. EXTERNAL SYNCHRONIZATION TO 12MHz
IO
(200mA/DIV)
∆VO
(100mV/DIV)
100µs/DIV
FIGURE 11. LOAD TRANSIENT RESPONSE (22mA TO 600mA)
5
IO
(200mA/DIV)
∆VO
(100mV/DIV)
50µs/DIV
FIGURE 12. LOAD TRANSIENT RESPONSE
(30mA TO 600mA)
FN6279.0
October 5, 2006
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet ISL97536.PDF ] | |
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