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ISL97644 の電気的特性と機能

ISL97644のメーカーはIntersil Corporationです、この部品の機能は「Boost + LDO + VON Slice + VCOM」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL97644
部品説明 Boost + LDO + VON Slice + VCOM
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL97644 Datasheet, ISL97644 PDF,ピン配置, 機能
®
Data Sheet
April 11, 2006
ISL97644
FN9228.0
Boost + LDO + VON Slice + VCOM
The ISL97644 represents an integrated DC/DC regulator for
monitor and notebook applications with screen sizes up to
20”. The device integrates a boost converter for generating
AVDD, a VON slice circuit, an integrated logic LDO and a high
performance VCOM amplifier.
The boost converter features a 2.6A FET and has user
programmable soft-start and compensation. With efficiencies
up to 92%, the AVDD is user selectable from 7V to 20V.
The logic LDO includes a 350mA FET for driving the low
voltage needed by the external digital circuitry.
The VON slice circuit can control gate voltages up to 30V.
High and low levels are programmable, as well as discharge
rate and timing.
The integrated VCOM features high speed and drive
capability. With 30MHz bandwidth and 50V/µs slew rate, the
VCOM amplifier is capable of driving 400mA peaks, and
100mA continuous output current.
Pinout
ISL97644
(24 LD 4x4 QFN)
TOP VIEW
24 23 22 21 20 19
GND 1
18 LX
VGH_M 2
17 VIN_2
VFLK 3
16 FREQ
VDPM 4
15 COMP
VDD_1 5
14 SS
VDD_2 6
13 VIN_1
7 8 9 10 11 12
Features
• 3V to 5.5V Input
• 2.6A Integrated Boost for Up to 20V AVDD
• Integrated VON Slice
• 350mA VLOGIC LDO
- 2.5V, 2.85V, 3.3V Output Voltage Selectable
• 600kHz/1.2MHz fS
• VCOM Amplifier
- 30MHz BW
- 50V/µs SR
- 400mA Peak Output Current
• UV and OT Protection
• 24 Ld 4x4 QFN
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• LCD Monitors (15”+)
• Notebook Display (up to 16”)
Ordering Information
TEMP.
PART NUMBER PART RANGE
(Note)
MARKING (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL97644IRZ 97644IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D
ISL97644IRZ-T 97644IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D
6k pc Tape & Reel
ISL97644IRZ-TK 97644IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D
1k pc Tape & Reel
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.
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





ISL97644 pdf, ピン配列
ISL97644
Absolute Maximum Ratings
Lx to GND, AGND and PGND . . . . . . . . . . . . . . . . . . . . -0.5 to +25V
VDD2, OUT, NEG and POS
to GND, AGND and PGND . . . . . . . . . . . . . . . . . . . . . -0.5 to +25V
VDD1, VGH and VGH_M
to GND, AGND and PGND . . . . . . . . . . . . . . . . . . . . . -0.5 to +32V
Differential Voltage Between POS and NEG . . . . . . . . . . . . . . . ±6V
Voltage Between GND, AGND and PGND . . . . . . . . . . . . . . . ±0.5V
All Other Pins to GND, AGND and PGND . . . . . . . . . . -0.5 to +6.5V
Input, Output, or I/O Voltage . . . . . . . . . . . GND -0.3V to VIN + 0.3V
Recommended Operating Conditions
Input Voltage Range, VS . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V
Boost Output Voltage Range, AVDD . . . . . . . . . . . . . . . . . 8V to 20V
Input Capacitance, CIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22µF
Boost Inductor, L1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH to 10µH
LDO Output Capacitance. . . . . . . . . . . . . . . . . . . . . . .2.2µF to 10µF
Output Capacitance, COUT . . . . . . . . . . . . . . . . . . . . . . . . . . 2x22µF
Operating Ambient Temperature Range . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . .-40°C to +125°C
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
4x4 QFN Package (Notes 1, 2) . . . . . .
39
2.5
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Maximum Continuous Junction Temperature . . . . . . . . . . . . 125°C
Power Dissipation
TA 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.44W
TA = 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.34W
TA = 85°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.98W
TA = 100°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.61W
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
2. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications VIN1 = VIN2 = ENABLE = 5V, VDD1 = VDD2 = 14V, VGH = 25V, AVDD = 10V, TA = -40°C to 85°C
Unless Otherwise Noted.
SYMBOL
PARAMETER
TEST CONDITION
MIN TYP MAX
GENERAL
VS
IS_DIS
VIN1, VIN2 Input Voltage Range
See separate LDO specifications
3.0
5.0
5.5
Sum of VIN1, VIN2 Supply Currents ENABLE = 0V
when Disabled
0.2 2
IS Sum of VIN1, VIN2 Supply Currents ENABLE = 5V, LX not switching, LDO
not loaded
1
UVLO
Undervoltage Lockout Threshold VIN2 Rising
VIN2 Falling
OTR
Thermal Shutdown Temperature Temperature Rising
OTF Temperature Falling
LOGIC INPUT CHARACTERISTICS - ENABLE, VFLK, FREQ, VDPM
2.3 2.45 2.6
2.2 2.35 2.5
140
100
VIL Low Voltage Threshold
VIH High Voltage Threshold
RIL Pull-Down Resistor
STEP-UP SWITCHING REGULATOR
Enabled, Input at VIN2
0.8
2.2
150 250 400
AVDD
AVDD/IOUT
AVDD/VIN
ACCAVDD
Output Voltage Range
Load Regulation
Line Regulation
Overall Accuracy (Line, Load,
Temperature)
50mA < ILOAD < 250mA
ILOAD = 150mA, 3.0 < VIN1 < 5.5V
10mA < ILOAD < 300mA, 3.0 < VIN1
< 5.5V, 0°C < TA < 85°C
VIN*1.25
-3
0.2
0.15
20
0.25
3
UNIT
V
µA
mA
V
V
C
C
V
V
k
V
%
%/V
%
3 FN9228.0
April 11, 2006


3Pages


ISL97644 電子部品, 半導体
ISL97644
ITypical Performance Curves
100
FOSC = 650kHz
90
80 FOSC = 1.2MHz
70
60
50
40
30
20
10
0
0 200 400 600 800 1000
IAVDD (mA)
FIGURE 1. AVDD EFFICIENCY vs IAVDD
1200
0
-0.1
-0.2
-0.3 FOSC = 650kHz
-0.4
-0.5
-0.6 FOSC = 1.2MHz
-0.7
-0.8
-0.9
0
200 400 600 800 1000 1200
IAVDD (mA)
FIGURE 2. AVDD LOAD REGULATION vs IAVDD
10.5
10.45
10.4
10.35
AVDD 150mA
AVDD 500mA
10.3
10.25
10.2
10.15
3
3.5 4.0 4.5 5.0 5.5
VIN (V)
FIGURE 3. LINE REGULATION AVDD vs VIN
6.0
L = 10µH, COUT = 40µF, CCOMP = 2.2nF, RCOMP = 10k
IAVDD
AVDD (AC COUPLED)
FIGURE 4. BOOST CONVERTER TRANSIENT RESPONSE
3.4
3.3 3.3V OUTPUT, 100mA
3.2 3.3V OUTPUT, 350mA
3.1
3.0
2.9 2.85V OUTPUT, 100mA
2.8 2.85V OUTPUT, 350mA
2.7
2.6
2.5 2.5V OUTPUT, 100mA
2.5V OUTPUT, 350mA
2.4 3
45
VIN (V)
FIGURE 5. LINE REGULATION LDO_OUT vs VIN
6
0
-0.2
-0.4 ADJ = 0
-0.6
ADJ = OPEN
ADJ = LDO_OUT
-0.8
-1.0
-1.2
0
100 200 300
IO (mA)
FIGURE 6. LDO LOAD REGULATION vs IO
400
6 FN9228.0
April 11, 2006

6 Page



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共有リンク

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部品番号部品説明メーカ
ISL97642

TFT-LCD DC/DC

Intersil Corporation
Intersil Corporation
ISL97644

Boost + LDO + VON Slice + VCOM

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ISL97645

Boost VON Slice VCOM

Intersil Corporation
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ISL97645A

Boost + VON Slice + VCOM + Reset

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Intersil


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