EL7584 Datasheet PDF - Renesas


www.Datasheet-PDF.com

EL7584
Renesas

Part Number EL7584
Description 4-Channel DC/DC Converter
Page 16 Pages

EL7584 datasheet pdf
View PDF for PC
EL7584 pdf
View PDF for Mobile


No Preview Available !

EL7584
4-Channel DC/DC Converter
OBSOLETE PRODUCT
FOR A POSSIBLE SUBSTITUTE PRODUCT
contact our Technical Support Center at
1-888-INTERSIL or www.intersil.com/tsc
DATASHEET
FN7317
Rev 2.00
February 4, 2005
The EL7584 is a 4-channel DC/DC converter IC which is
designed primarily for use in TFT-LCD applications. The
boost converter has 2V to 14V input capability and provides
5V to 17V output, which powers the column drivers and
provides up to 370mA @ 15V. A pair of charge pump control
circuits provide outputs to allow the external generation of
VON and VOFF supplies at 5V to 40V and 0V to -40V,
respectively, each at up to 60mA for VBOOST = 15V. The
VCOM buffer provides up to 50mA continuous output current
from 2V to 13V.
The EL7584 features adjustable switching frequency and on-
chip power sequence to simplify start-up operation. A
separate input is available to externally increase the default
delay of the positive charge pump. An over-temperature
feature is provided to allow the IC to be automatically
protected from excessive power dissipation.
The EL7584 is available in a 24-pin TSSOP package and is
specified for operation over the full -40°C to +85°C
temperature range.
Pinout
EL7584
(24-PIN TSSOP)
TOP VIEW
SS 1
FBB 2
EN 3
VDDB 4
LX1 5
LX2 6
VSSN 7
DRVN 8
VDDN 9
FBN 10
DP 11
INC 12
24 VSSB
23 ROSC
22 VREF
21 PGND
20 PGND
19 VSSP
18 DRVP
17 VDDP
16 FBP
15 VSSC
14 VCOM
13 VDDC
Features
• TFT-LCD display supply
- Boost regulator
- VCOM buffer
- VON charge pump
- VOFF charge pump
• 2V to 14V VIN supply
• 5V < VBOOST < 17V
• 2V < VCOM < 13V
• 5V < VON < 40V
• -40V < VOFF < 0V
• VBOOST = 15V @ 370mA
• High frequency, small inductor DC/DC boost circuit
• Over 90% efficient DC/DC boost converter capability
• Built-in power-up sequence with adjustable VON delay
• Adjustable frequency
• Adjustable soft-start
• Adjustable outputs
• Over-temperature protection
• Small parts count
• Pb-free available (RoHS compliant)
Applications
• TFT-LCD panels
• PDAs
Ordering Information
PART
NUMBER
PACKAGE TAPE & REEL PKG. DWG. #
EL7584IR
24-Pin TSSOP
-
MDP0044
EL7584IR-T7 24-Pin TSSOP
7”
MDP0044
EL7584IR-T13 24-Pin TSSOP
13”
MDP0044
EL7584IRZ
(See Note)
24-Pin TSSOP
(Pb-free)
-
MDP0044
EL7584IRZ-T7 24-Pin TSSOP
(See Note)
(Pb-free)
7”
MDP0044
EL7584IRZ- 24-Pin TSSOP
T13 (See Note) (Pb-free)
13”
MDP0044
NOTE: Intersil Pb-free 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.
FN7317 Rev 2.00
February 4, 2005
Page 1 of 16



No Preview Available !

EL7584
Absolute Maximum Ratings (TA = 25°C)
LX Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
VDDB, VDDP, VDDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
VDDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5V
Maximum Continuous VBOOST Output Current. . . . . . . . . . . 800mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
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.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are
at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications VIN = 3.3V, VBOOST = 12V, ROSC = 62k, TA = 25°C, Unless Otherwise Specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
DC/DC BOOST CONVERTER
IQ1_B
Quiescent Current - Shut-down
EN = 0V
0.8 10 µA
IQ2_B
V(FBB)
Quiescent Current - Switching
Feedback Voltage
EN = VDDB
1.275
4.8
1.300
8
1.325
mA
V
VREF
VROSC
I(FBB)
Reference Voltage
Oscillator Set Voltage
Feedback Input Bias Current
1.260
1.260
1.310
1.325
0.1
1.360
1.390
V
V
µA
VDDB
Boost Converter Supply Range
DMAX
Maximum Duty Cycle
I(LX)MAX
Peak Internal FET Current
RDS-ON
Switch On Resistance
ILEAK-SWITCH Switch Leakage Current
VBOOST
Output Range
VBOOST/VIN Line Regulation
VBOOST/IO1 Load Regulation
FOSC-RANGE Frequency Range
FOSC1
Switching Frequency
VCOM BUFFER
VDDC
Supply Voltage Range
IQ1, VDDC
VDDC Disable Current
IQ2, VDDC
VDDC Enable Current
VCOM-offset
Accuracy of VCOM Output Voltage
I(INC)
VCOM Input Bias Currents
RO(VCOM)
VCOM Output Impedance
ICOM(max)
PSRR
CMRR
Output Current Limit
Supply Voltage Rejection
Common Mode Voltage Rejection
at VBOOST = 10V, I(LX) total = 350mA
I(LX) total
VBOOST > VIN + VDIODE
2.7V < VIN < 13.2V, VBOOST = 15V
50mA < IO1 < 250mA
ROSC range = 240kto 60k
ROSC = 62k
2 17 V
85 92
%
1.75 A
0.22
1 µA
5 17 V
0.1 %
0.5 %
200 1200 kHz
900 1000 1100 kHz
VDDC = 12V, EN = 0V
VDDC = 12V, VEN = VDDB, no load
2V < VCOM < (VDDC - 2V)
Current magnitude
VDDC = VBOOST = 12V, VCOM = 6V with
-100mA < ILOAD < 100mA
CLOAD for VCOM > 0.47µF, MLCC
VINC = VDDC/2, 9V < VDDC < 15V
VDDC = 12V, 2V < VINC < 10V
6 15
5.5 20
1.7 5
-10 +10
-0.1 0.01
0.1
0.25
V
µA
mA
mV
µA
150
60 102
60 93
mA
dB
dB
FN7317 Rev 2.00
February 4, 2005
Page 2 of 16



No Preview Available !

EL7584
Electrical Specifications VIN = 3.3V, VBOOST = 12V, ROSC = 62k, TA = 25°C, Unless Otherwise Specified. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX
UNIT
POSITIVE REGULATED CHARGE PUMP (VON)
Most positive VON output depends on the magnitude of the VDDP input voltage (normally connected to VBOOST) and the external component
configuration (doubler or tripler)
VDDP
IQ1(VDDP)
IQ2(VDDP)
IDP1
IDP2
V(FBP)
Supply Input for Positive Charge Pump
Quiescent Current - Shut-down
Usually connected to VBOOST output
EN = 0V
Quiescent Current - Switching
Disable Charge Current
EN = VDDB
EN = 0V, DP = 0V
Enable Discharge Current
Feedback Reference Voltage
EN = VDDB, DP = 5V
5
1.5
100
1.245
11.5
2.3
1.9
200
1.310
17
20
5
2.5
300
1.375
V
µA
mA
mA
nA
V
I(FBP)
Feedback Input Bias Current
0.1 µA
I(DRVP)
RMS DRVP Output Current
VDDP = 12V
60 mA
VDDP = 6V
15 mA
ILR_VON
Load Regulation
5mA < IL < 15mA
-0.5 0.03 0.5 %/mA
FPUMP
Charge Pump Frequency
Frequency set by ROSC - see boost section
0.5*FOSC
NEGATIVE REGULATED CHARGE PUMP (VOFF)
Most negative VOFF output depends on the magnitude of the VDDN input voltage (normally connected to VBOOST) and the external component
configuration (doubler or tripler)
VDDN
IQ1(VDDN)
IQ2(VDDN)
V(FBN)
Supply Input for Negative Charge Pump Usually connected to VBOOST output
Quiescent Current - Shut-down
ENBN = 0V
Quiescent Current - Switching
Feedback Reference Voltage
ENBN = VDDB
5 17 V
4.5 20 µA
2.3 5 mA
-80 0 +80 mV
I(FBN)
Feedback Input Bias Current
Magnitude of input bias
0.1 µA
I(DRVN)
RMS DRVN Output Current
ILR_VOFF
Load Regulation
FPUMP
Charge Pump Frequency
ENABLE CONTROL LOGIC
VDDN = 12V
VDDN = 6V
-15mA < IL < -5mA
Frequency set by ROSC - see boost section
60
15
-0.5 0.03 0.5
0.5*FOSC
mA
mA
%/mA
VHI-EN
VLO-EN
I(EN)
Enable Input High Threshold
Enable Input Low Threshold
Enable Input Bias Current
OVER-TEMPERATURE PROTECTION
VEN = 5V
1.6 V
0.5 V
3.7 7.5 µA
TOT
THYS
Over-temperature Threshold
Over-temperature Hysteresis
130 °C
40 °C
FN7317 Rev 2.00
February 4, 2005
Page 3 of 16



No Preview Available !

EL7584
Pin Descriptions I = Input, O = Output, S = Supply
PIN NUMBER
PIN NAME
PIN TYPE
PIN FUNCTION
1 SS I Soft-Start input: a capacitor determines the current limit ramp time.
2 FBB I Voltage feedback input determines the value of VBOOST.
3 EN I Starts internal power sequencing of VBOOST, VOFF, VCOM and VON outputs
(See Applications Information) ; active HIGH input.
4 VDDB P Positive supply for VBOOST DC/DC controller.
5 LX1 O Boost inductor saturating MOSFET #1.
6 LX2 O Boost inductor saturating MOSFET #2.
7 VSSN* P Ground return for VOFF regulator.
8 DRVN O Pump capacitor driver for VOFF regulator.
9 VDDN P Positive supply for VOFF regulator.
10 FBN
I Voltage feedback input determines the value of VOFF.
11 DP
I An external capacitor increases VON power up delay time.
12 INC
I VCOM Buffer input.
13 VDDC
P Positive supply for VCOM Buffer.
14 VCOM
O VCOM Buffer output.
15 VSSC*
P Ground return for VCOM Buffer.
16 FBP
I Voltage feedback input determines the value of VON.
17 VDDP
P Positive supply for VON regulator.
18 DRVP O Pump capacitor driver for VON regulator.
19 VSSP*
P Ground return for VON regulator.
20 PGND* P Ground return for MOSFET #1.
21 PGND* P Ground return for MOSFET #2.
22 VREF O Voltage reference for VOFF feedback .
23 ROSC
I An external resistor sets the DC/DC switching frequency.
24 VSSB*
P Ground return for VBOOST DC/DC controller.
NOTE: *VSSB, VSSC, VSSN, VSSP, and PGND (2) are shorted internally to the device substrate.
FN7317 Rev 2.00
February 4, 2005
Page 4 of 16




EL7584 datasheet pdf
Download PDF
EL7584 pdf
View PDF for Mobile


Similiar Datasheets : EL7512 EL7512C EL7513 EL7515 EL7516 EL7516 EL7520 EL7520A EL7530 EL7531 EL7532 EL7534 EL7535 EL7536 EL7536 EL7551 EL7551C EL7554 EL7554 EL7556AC EL7556B EL7556BC EL7556D EL7558BC EL7562 EL7562 EL7562C EL7563 EL7563C EL7564

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact