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參數(shù)資料
| 型號： | LX1686CPW |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | FLUORESCENT LIGHT CONTROLLER, 256 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | PLASTIC, TSSOP-24 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 139K |
| 代理商： | LX1686CPW |
D IGITAL D IMMING CCFL C ONTROLLER IC
LX1686
PRODUCT DA T ABOOK 1996/1997
Copyright 2000
Rev. 0.4 1/00
2
RangeMAXTM
P RELIMINAR Y D ATA S HEET
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the recommended operating conditions of T
A = 0 to 85°C, VDD=VDD_P= 3.0 to 5.5V)
(Ri = 40k
, C
VCO= 0.01F, CAFD= 0.22F, CTRI= 0.83F, CRAMP= 208pF, RRAMP = 15k, CPD= 0.22F, CPDC= 0.047F, RPD= 110k.)
Power Supply Voltage
VDD
VDD = VDD_P
Operating Current
IDD
VDD = VDD_P = 5V
Power Supply Voltage
VDD_P
VDD = VDD_P
Output Buffer Operating Current
IDD_P
Volsns = VDD = VDD_P = 5V, CA = CB = 1000pF
UVLO Threshold
VTH_UVLO
UVLO Hysteresis
VH_UVLO
Parameter
Symbol
Test Conditions
Units
LX1686
Min.
Typ.
Max.
35.5
V
57
mA
35.5
V
210
mA
2.7
2.9
V
160
mV
Direct Drive Ramp Block
Triangular Wave Generator Analog Output Peak Voltage
VP_TRI
Triangular Wave Generator Analog Output Valley Voltage
VV_TRI
Triangular Wave Generator Oscillation Frequency
F_TRI
Triangular Wave Generator Oscillation Charge Current
ICHG_TRI
Tri_c = 0V
Triangular Wave Generator Oscillation Discharge Current
IDISCHG_TRI
Tri_c = 3V
Ramp Generator Analog Output Peak Voltage
VP_RAMP
Ramp Generator Analog Output Valley Voltage
VV_RAMP
Ramp Frequency Change Threshold
VTH_RAMP_R
VDD = 3V
VDD = 5.5V
Ramp Generator Oscillation Frequency - Nominal
FRAMP
VTRI_C = 1.4V
Ramp Generator Oscillation Frequency - Maximum
FRAMP_HI
VTRI_C = 2.25V
OLSNS Threshold Voltage
VTH_OLSNS
VDD = 3V
OLSNS Hysteresis
VH_OLSNS
VDD = 3V
OLSNS-to-ICOMP Propagation Delay
TD_OLSNS
GBD
2.25
V
0.75
V
10
Hz
-2.3
-2.55
-2.9
A
2.3
2.65
2.9
A
2.25
V
0.75
V
1.4
1.5
1.65
V
1.55
1.65
1.8
V
84
100
116
KHz
170
200
256
KHz
250
300
360
mV
45
mV
1S
Supply Voltage (VDD, VDD_P) ......................................................................... 6.5V
Digital Inputs .................................................................................. -0.3 to VDD+0.5V
Analog Inputs .................................................................................. -0.3 to VDD+0.5V
Digital Outputs ................................................................................ -0.3 to VDD+0.5V
Analog Outputs ............................................................................... -0.3 to VDD+0.5V
Operating Junction Temperature
Plastic (DB, PW Packages) .......................................................................... 150°C
Storage Temperature Range .............................................................. -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) .................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified
terminal.
PW PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
100°C/W
Junction Temperature Calculation: T
J = TA + (PD x θJA).
The
θ
JA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
THERMAL DATA
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PACKAGE PIN OUTS
PW PACKAGE
(Top View)
BOUT
VDD_P
VDD
TRI_C
OLSNS
ISNS
ICOMP
VSNS
VCOMP
BRT
I_R
ENABLE
1
24
223
322
421
520
619
718
817
916
10
15
11
14
12
13
AOUT
VSS_P
VSS
AFD_C
RAMP_C
RAMP_R
FVERT
PD_CR
VCO_C
BRT_POS
BRITE
DIG_DIM
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