ISL26102 INTERSIL [Intersil Corporation], ISL26102 Datasheet - Page 13

• Manufacturer Part Number: ISL26102
• Manufacturer: INTERSIL [Intersil Corporation]

HV Dual Supply Power Solution
For more information, refer to AN1673 “Application Circuit to generate
Positive and Negative Supplies Using ISL97701 Boost Regulator”.
5V
Boost Regulator
for Positive and
Negative Supplies
Key Features
• Up to 87% Efficiency
• 2.3V to 5.5V Input
• Up to 28V Output
• Integrated Boost Schottky Diode
• Input Voltage Disconnect Switch for Micro Power
• Synchronization Input
• 10 Ld 3x3 DFN Package
• Pb-free (RoHS Compliant)
• Up to 2.5W Output Power
5µF
Shutdown
C
0
Analog Input
VDDOUT
VDD
NEN
NSYNC
GND
ISL97701
6.8µH
L
1
Analog Output
Q
1
VOUT
D
1
FB
LX
V
4.7µF
0
C
Synchronization input
to lock to preferred
switching frequency to
reduce unwanted noise
in the system.
1
-
+
+
4.7µF
C
20.99V
INTERSIL
2
R
383kΩ
R
22.2kΩ
Integrated input
disconnect switch
enables true micro
power shutdown.
1
2
-
Control
Up to 2.5W Output Power Delivered in a 3x3mm TDFN Package
Highly Integrated Design Reduces External Components
D
D
SELECTION GUIDE | INDUSTRIAL PROCESS CONTROL SOLUTIONS
3
33.2kΩ
2
R
RECOMMENDED MAXIMUM OUTPUT POWER vs INPUT VOLTAGE
3
NOTE: VOUT = (390k + 39k)/39k*1.15V = 12.65V
2.3V TO 5.5V
ISL28108
5V
5µF
C
4.7µF
C
0
3
+
-
100kΩ
R
3.2
2.9
2.6
2.3
2.0
1.7
1.4
1.1
0.8
0.5
+
-
VDDOUT
VDD
NEN
NSYNC
GND
4
2.3
Integrated FET Boost Regulator: ISL97701
V+
2.7
V-
3.1
Sensors
6.8µH
3.5
100kΩ
L
R
1
V
www.intersil.com/industrial_process_control | 13
IN
ISL97701
5
3.9
(V)
4.3
ISL28108
100kΩ
R
- 20.99V
4.7
VOUT
6
-
+
FB
LX
5.1
5V
5.5
3.3µF
V
C
V-
V+
DD
1
Integrated
Schottky diode
+2V TO 30V
R
390kΩ
R
39kΩ
VOUT
VOUT
1
2
Power
Internally
compensated boost
requires only a small
3.3µF output cap for
stability.
20V
(positive)
-20V
(negative)
PLC