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PDF ISL9105 Data sheet ( Hoja de datos )
| Número de pieza | ISL9105 | |
| Descripción | 600mA Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Data Sheet
March 28, 2008
ISL9105
FN6415.2
600mA Low Quiescent Current 1.6MHz
High Efficiency Synchronous Buck
Regulator
ISL9105 is a 600mA, 1.6MHz step-down regulator that is
ideal for powering low-voltage microprocessors in handheld
devices such as PDAs and cellular phones. It is optimized
for generating low output voltages down to 0.8V. The supply
voltage range is from 2.7V to 5.5V, allowing for the use of a
single Li+ cell, three NiMH cells or a regulated 5V input. It
has a guaranteed minimum output current of 600mA.
1.6MHz pulse-width modulation (PWM) switching frequency
allows for use of small external components. It has flexible
operation mode selection of forced PWM mode and low IQ
mode with typical 25µA quiescent current for highest light
load efficiency to maximize battery life.
The ISL9105 includes a pair of low ON-resistance
P-Channel and N-Channel internal MOSFETs to maximize
efficiency and minimize external component count. 100%
duty-cycle operation allows less than 200mV dropout voltage
at 600mA output current.
The ISL9105 offers a typical 216ms Power-On-Reset (POR)
timer at power-up. The timer output can be reset by RSI.
When shutdown, ISL9105 discharges the output capacitor.
Other features include internal digital soft-start, enable for
power sequence, overcurrent protection, and thermal
shutdown.
The ISL9105 is offered in a 2mmx3mm 8 Ld DFN package
with 1mm maximum height. The complete converter
occupies less than 1cm2 area.
Ordering Information
PART NUMBER
(NOTE)
TEMP.
PART RANGE
MARKING (°C)
PACKAGE PKG.
(Pb-free) DWG. #
ISL9105IRZ-T*
05Z -40 to +85 8 Ld 2x3 DFN L8.2x3
*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.
Features
• High Efficiency Synchronous Buck Regulator with up to
95% Efficiency
• Selectable Forced PWM Mode and SKIP Mode
• 25µA Quiescent Supply Current in SKIP Mode
• 2.7V to 5.5V Supply Voltage
• 216ms POR Timer
• 3% Output Accuracy Over Temperature/Line/Load
• 600mA Guaranteed Output Current
• Less than 1µA Logic Controlled Shutdown Current
• 100% Maximum Duty Cycle for Lowest Dropout
• Discharge Output Capacitor when Shutdown
• Internal Loop Compensation
• Internal Digital Soft-Start
• Peak Current Limit Protection, Short Circuit Protection
• Over-Temperature Protection
• Enable
• Small 8 Ld 2mmx3mm DFN
• Pb-free (RoHS Compliant)
Applications
• Single Li-Ion Battery-Powered Equipment
• DSP Core Power
• PDAs and Palmtops
Pinout
ISL9105
(8 LD DFN)
TOP VIEW
VIN 1
EN 2
POR 3
MODE 4
8 PHASE
7 GND
6 FB
5 RSI
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. 2006-2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL9105
Typical Operating Performance (Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 3.6V, EN = VIN,
RSI = MODE = 0V, L = 3.3µH, C1 = 10µF, C2 = 10µF, IOUT = 0A). (Continued)
EN EN
VPHASE
VPHASE
VOUT
IL
VOUT
IL
FIGURE 7. SOFT-START (PFM, VIN = 3.6V, VOUT = 1.6V,
IO = 10mA)
FIGURE 8. SOFT-START (PWM, VIN = 3.6V, VOUT = 1.6V,
IO = 1mA)
VOUT(AC COUPLED)
VPHASE
VOUT(AC COUPLED)
VPHASE
IL
IOUT
200mA
400mA
FIGURE 9. LOAD TRANSIENT (PWM, VIN = 3.6V, VOUT = 1.6V)
IL
IOUT
5mA
600mA
FIGURE 10. LOAD TRANSIENT (PWM, VIN = 3.6V, VOUT = 1.6V)
VPHASE
VOUT
IL
IOUT
10mA
600mA
FIGURE 11. LOAD TRANSIENT (PFM, VIN = 3.6V, VOUT = 1.6V)
5
VPHASE
VOUT
600mA
IL
10mA IOUT
FIGURE 12. LOAD TRANSIENT (PFM, VIN = 3.6V, VOUT = 1.6V)
FN6415.2
March 28, 2008
5 Page 
ISL9105
Dual Flat No-Lead Plastic Package (DFN)
2X
AD
0.15 C A
2X
0.15 C B
6
INDEX
AREA
E
TOP VIEW
B
// 0.10 C
A
0.08 C
C SIDE VIEW
SEATING
PLANE
A3
(DATUM B)
6
INDEX
AREA
(DATUM A)
D2
D2/2
12
78
NX k
E2
E2/2
NX (b)
5
NX L
8
N N-1
e
(Nd-1)Xe
REF.
BOTTOM VIEW
(A1)
NX b
5
0.10 M C A B
CL
L
SECTION "C-C"
CC
e
TERMINAL TIP
FOR EVEN TERMINAL/SIDE
L8.2x3
8 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE
MILLIMETERS
SYMBOL
MIN NOMINAL MAX
NOTES
A 0.80 0.90 1.00
-
A1
-
- 0.05
-
A3 0.20 REF -
b 0.20 0.25 0.32
5,8
D
2.00 BSC
-
D2 1.50 1.65 1.75
7,8
E
3.00 BSC
-
E2 1.65 1.80 1.90
7,8
e
0.50 BSC
-
k 0.20 - - -
L 0.30 0.40 0.50
N8
Nd 4
8
2
3
NOTES:
Rev. 0 6/04
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
3. Nd refers to the number of terminals on D.
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.25mm and 0.30mm from the terminal tip.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
7. Dimensions D2 and E2 are for the exposed pads which provide
improved electrical and thermal performance.
8. Nominal dimensions are provided to assist with PCB Land
Pattern Design efforts, see Intersil Technical Brief TB389.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11 FN6415.2
March 28, 2008
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ISL9105.PDF ] | |
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