ISL89411 INTERSIL [Intersil Corporation], ISL89411 Datasheet - Page 46

• Manufacturer Part Number: ISL89411
• Description: Intersil Power Management Solutions
• Manufacturer: INTERSIL [Intersil Corporation]

46
Intersil Power Management Solutions  2012  www.intersil.com
Power Support
Digitally Controlled Potentiometer (DCPs)
1st Low Voltage
Precision DCP
Typically >99% Accurate at Each Tap
• 128-tap, I
• Operational Specifications
• High Reliability - Non-volatile EEPROM
• Functional as a True Digital Rheostat or
• Eliminates the Need for Complex
World’s Smallest
and Lowest Voltage,
Dual, DCP
• 256-tap, I
• Operational Voltage From 5.5V Down to 1.7V
• Lowest Digital Logic Signal at 0.84V (VIH)
• Smallest Package, ~50% Smaller than
• Also Available in the 14LD TSSOP
• See Also - ISL23315, ISL23415 (Single);
Key Features
Key Features
Digital Potentiometer
○ 1% typical resistive tolerance over
○ Zero-compensated wiper resistance
○ 10ppm/°C temperature coefficient
○ Single 2.7V to 5.5V supply
○ Pin selectable slave address
○ 10kΩ, 50kΩ and 100kΩ total
Storage of Wiper Position
○ 15 years retention @ +125°C
○ 1,000,000 cycles endurance
Adjustable Voltage
Algorithms to Guarantee Precision
Address Pins Allowing Up to 9 Devices per Bus
Competitive Solutions - µTQFN (2.6mmx1.8mm)
ISL23425 (Dual,SPI); ISL23345, ISL23445 (Quad)
operational conditions
match to reference resistor
resistance
2
2
C Controlled, Precision
C/SM Bus Controlled Device with 3
VIN
5V Bias
ADJUSTABLE POINT OF LOAD DC/DC
REGULATOR
True Digital Rheostat
99% Accuracy
ISL85001 V
ISL22317.
CONTROLLER
ERROR
ISL85001
Digitally Adjust
Output Voltage
ISL23325 (1/2)
PWM
Linear Controller
Adjusting Over Current Protection and
Margining with DCPs
ISL6442
Dual PWM
VREF
+
FB
R OFFSET
OUT
D1
L1
C F
R F
, 1A Standard Buck PWM Regulator used with
5V Input
5V Input
C DCPL
C1
MOSFETs
MOSFETs
Type II
compensation
shown
C I
5V OR 12V
COMP/SD
VOUT
V CC
RW
R1
R2
CRW
I
I
2
2
C
C
1% Tolerance
DCP
ISL22317
1% Precision DCP
1% Precision DCP
FB
ISL22317
ISL22317
7
6
LC Filter
LC Filter
ISL6545A
ISL6545,
3
5
VCC
R S
GND
Single, Non-Volatile: ISL22317
1
8
2
4
UGATE
BOOT
PHASE
LGATE/OCSET
±15% High
Accuracy
Margining
±15% High
Accuracy
Margining
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
ISL23325 (1/2)
Digitally Adjust OCP
0
THE ISL85001 VOUT vs THE
ISL22317W TAP POSITION
AVCC: 1.0V/ 10A
R OCSET
Dual, Volatile: ISL23325
AVTT: 1.2V/ 6A
C BOOT
20
TAP POSITION (DECIMAL)
40
L OUT
C OUT
60
C HF
80
1V TO 12V
FPGA
V IN
100
+V O
C BULK
120