ISL97702IRZ-T7 Intersil, ISL97702IRZ-T7 Datasheet

IC BOOST REG DUAL FEEDBACK 10DFN

ISL97702IRZ-T7

Manufacturer Part Number
ISL97702IRZ-T7
Description
IC BOOST REG DUAL FEEDBACK 10DFN
Manufacturer
Intersil
Type
Step-Up (Boost)r
Datasheet

Specifications of ISL97702IRZ-T7

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
2
Voltage - Output
Adj to 28V
Current - Output
130mA
Frequency - Switching
1MHz
Voltage - Input
2.3 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Boost with Dual Reference Outputs
The ISL97702 represents a high efficiency, boost converter
with integrated boost FET, boost diode and input disconnect
FET. A dual feedback circuit allows simple switching
between two pre-defined output voltages using a single logic
input.
With an input voltage of 2.3V to 5.5V the ISL97702 has an
output capability of up to 50mA at 18V using integrated
500mA switches. Efficiencies are up to 87%. The
integrated protection FET is used to disconnect the boost
inductor from the input supply whenever an output fault
condition is detected, or when the device is disabled. This
gives 0 output current in the disabled mode, compared to
standard boost converters where current can still flow when
the device is disabled.
The ISL97702 comes in the 10 Ld 3x3 DFN package and is
specified for operation over the -40°C to 85°C temperature
range.
Ordering Information
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.
Pinout
ISL97702IRZ
(Note)
ISL97702IRZ-T7
(Note)
ISL97702IRZ-T13
(Note)
NUMBER
PART
VDDOUT
NSYNC
GND
VDD
FB0
97702IRZ
97702IRZ
97702IRZ
MARKING
1
2
3
4
5
PART
(10 LD 3X3 DFN)
TOP VIEW
ISL97702
THERMAL
®
PAD
TAPE &
REEL
1
13”
7”
-
Data Sheet
10 Ld 3x3 DFN
(Pb-Free)
10 Ld 3x3 DFN
(Pb-Free)
10 Ld 3x3 DFN
(Pb-Free)
PACKAGE
10
9
8
7
6
VOUT
NEN
LX
SEL
FB1
MDP0047
MDP0047
MDP0047
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Up to 87% efficiency
• 2.3V to 5.5V input
• Up to 28V output
• 50mA at 18V
• Integrated boost Schottky diode
• Input voltage disconnect switch
• Dual output voltage selectable
• Synchronization input
• Chip enable
• 10 Ld 3x3 DFN package
• Pb-free plus anneal available (RoHS compliant)
Applications
• OLED display power
• LED display power
• Adjustable power supplies
Typical Application Diagram
V(VOUT)
V(VOUT)
2.3V-5.5V
C
October 13, 2005
0
0
1
NEN
All other trademarks mentioned are the property of their respective owners.
= (390k + 39k) / 39k * 1.15V = 12.65V
= (390k + 26.1k) / 26.1k * 1.15V = 18.33V
1
0
0
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
VDDOUT
VDD
NEN
NSYNC
GND
SEL
Copyright Intersil Americas Inc. 2005. All Rights Reserved
DUAL REFERENCE
BOOST WITH
6.8µ
L
SEL
1
X
0
1
VOUT
FB0
FB1
ISL97702
LX
26.1k
FN7462.0
V
V
High Z
R
V
OUT0
OUT1
3
OUT
V
3.3µ
C
DD
1
+2V - 30V
R
390k
R
39k
1
2

Related parts for ISL97702IRZ-T7

ISL97702IRZ-T7 Summary of contents

Page 1

... PART PART TAPE & NUMBER MARKING REEL PACKAGE ISL97702IRZ 97702IRZ - 10 Ld 3x3 DFN (Note) (Pb-Free) ISL97702IRZ-T7 97702IRZ 7” 3x3 DFN (Note) (Pb-Free) ISL97702IRZ-T13 97702IRZ 13” 3x3 DFN (Note) (Pb-Free) 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 ...

Page 2

Block Diagram VDD VDD Synchronization Synchronization Signal Detector Signal Detector Oscillator Oscillator VDD VDD VDD VDD AND AND AND AND FB1 FB1 S1 S1 FB0 FB0 S0 S0 ISL97702 ISL97702 2 ISL97702 Over-Temperature Over-Temperature Detector Detector 1 1 MUX MUX ...

Page 3

Absolute Maximum Ratings (T A VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

Electrical Specifications VDD = 3.6V, GND = NEN = 0V, SEL = NSYNC = VDD 390k 39k 26.1k 10µH, T PARAMETER DESCRIPTION R FB0 Pull-Down Switch Resistance FB0 R FB1 Pull-Down Switch ...

Page 5

Typical Performance Curves 3.6V 2. LOAD CURRENT (mA) FIGURE 2. EFFICIENCY vs LOAD CURRENT ( 10µH (CDRH4D28C-100NC 6.6µ 3. ...

Page 6

Typical Performance Curves FIGURE 8. 12V->18V TRANSITION (V FIGURE 10. SHUT DOWN @ SEL = ISL97702 (Continued) FIGURE 9. 18V->12V TRANSITION (V = 3.6V 360Ω 3.6V 3.6V, R ...

Page 7

Typical Performance Curves 18.20 18.19 18.18 18.17 18.16 18.15 18.14 18.13 18.12 18.11 18.10 18. LOAD CURRENT (mA) FIGURE 11. LOAD REGULATION (V 1200 1000 800 600 400 200 (V) IN FIGURE ...

Page 8

Pin Descriptions PIN NUMBER PIN NAME PIN FUNCTION 1 GND Ground 2 VDDOUT Protection Switch Output 3 VDD Supply Input 4 NSYNC Synchronization Input (Falling Edge) 5 FB0 Feedback Input 0 6 FB1 Feedback Input 1 7 SEL Select Input ...

Page 9

FIGURE 16. Fault Control The input voltage at VDD, current in the VDDOUT switch, voltage at V and junction temperature Tj are OUT continuously monitored and can either restart the start-up sequence or in some cases disable the ISL97702 boost ...

Page 10

FIGURE 17. NSYNC TO LX SYNCHRONIZATION DELAY FIGURE 19. LX SYNCHRONIZATION WITH f(SYNC) = 1.4MHz 10 ISL97702 FIGURE 18. LX SYNCHRONIZATION WITH f(SYNC) = 600kHz FN7462.0 October 13, 2005 ...

Page 11

J2 GND_IN C1 VDD C9 J1 4.7µ/10V C2 VDD_IN 100n 10µ VDD J4 JP3 NSYNC Typical Application Typical applications are passive- or active-matrix organic light emitting diode displays (PMOLED, AMOLED) in handheld devices. Applications with low power or screen saver/ ...

Page 12

PCB layout Considerations The layout is very important for the converter to function properly. To ensure the high pulse current in the power ground does not interfere with the sensitive feedback signals, the current loops (V -L1-LX-GND, and V IN ...

Page 13

... 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 ...

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