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LC7958NCのメーカーはSanyo Semicon Deviceです、この部品の機能は「64-Bit LED Driver for 300 dpi Printers」です。 |
部品番号 | LC7958NC |
| |
部品説明 | 64-Bit LED Driver for 300 dpi Printers | ||
メーカ | Sanyo Semicon Device | ||
ロゴ | |||
このページの下部にプレビューとLC7958NCダウンロード(pdfファイル)リンクがあります。 Total 11 pages
Ordering number: ENN*6585
CMOS IC
LC7958NC
64-Bit LED Driver for 300 dpi Printers
Preliminary
Overview
LC7958NC is a 64-bit constant current LED driver IC
designed to directly drive LED head array.
The output terminals for LED drive are arranged in
2-row staggered position of 80-µm pitch at one side. It
enables drive of LED Array of 300-dpi in one side
disposition, 600dpi in both sides disposition
Features and Functions
• Logic voltage (VDD): +5 V ± 10 %
• LED drive current (IOH): 5.0 mA (TYP)
• Clock frequency (fc): 10 MHz
• Output current control circuit built in
• Mode switching function by the SEL pin
• Chip size: 1.43 mm × 5.39 mm
• Number of pads: 86
• 64-bit shift register circuit
• 64-bit latch circuit
• Output driver on/off switching function
• Constant current circuit
• 64-bit p-channel open drain LED driver
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
42800RM6585-1/11
1 Page LC7958NC
Electrical Characteristics at VSS = 0 V, VDD1 = VDD2 = 5 V ± 10%, Ta = 0 to 100°C
Parameter
Symbol
Conditions
Ratings
min typ max
Unit
High-level output voltage
VDD -
VOH LOAD2, S0, CLOCK2: IO = -200µA
0.5
V
Low-level output voltage
Clock frequency
VOL LOAD2, S0, CLOCK2: IO = 200µA
fc
10
0.5 V
MHz
High-level input current
All input pads: VDD1 = 5.5 V, VI =
IIH
5.5 V
1.0 µA
Low-level input current
IIL1 LOAD1, SI, CLOCK1, STROBE,
IIL2 SEL, ADJ(-), ADJ(+): VDD1 = VDD2 -8
IIL3 = 5.5 V, VI = 0 V
-40
-25
-100
-1.0
-50
-200
µA
High-level output current
DO1 to DO64: operation mode 1,
IOH1 VDD1 = VDD2 = 5.0 V, VO = 1.6 V, -3.7 -5.0 -6.7 mA
VREF = 1.8 V
High-level output current
minus correction
High-level output current
plus correction
DO1 to DO64: operation mode 2
IOH2 VDD1 = VDD2 = 5.0 V, VO = 1.6 V, -4.5
VREF = 1.8 V
DO1 to DO64: operation mode 3
IOH3 VDD1 = VDD2 = 5.0 V, VO = 1.6 V, +4.5
VREF = 1.8 V
-6.0
+6.0
-7.0
+7.0
%
High-level output current
relative error between bits
∆IOH DO1 to DO64: with all bits on
-5.0
+5.0 %
Output off leakage current
DO1 to DO64: operation VDD1 =
IOL
5.5 V, VO = 0 V
0 -50 µA
Operating current drain
(mode 1)
VDD1: VDD1 = VDD2 = 5.5 V,
IDD VREF = 1.8 V, fc = 10 MHz, with
DO1 to DO64 off
9.0 13.0 mA
Standby current
VDD1: VDD1 = VDD2 = 5.5 V, VREF
IDDS = 1.8 V, with fc stopped, with DO1
to DO64 off
2.5 4.0 mA
6585-3/11
3Pages LC7958NC
Function Table
1. Shift Register and Latch Blocks
SEL
CLOCK1
Falling
edge
High
Rising edge
-
LOAD1
-
-
High
Shift register
DATA load and DATA
shift
DATA keep
-
- Low
-
Falling
edge
DATA load and DATA
-
shift
Rising edge
-
Low
DATA keep
- Low
-
- High
-
Latch
-
-
DATA load
DATA keep
-
-
DATA load
DATA keep
2. Output Block
STROBE
High
Low
Low
Note 1: "×": don’t care
SI
“×”
Low
High
DO output
OFF
OFF
ON
Establishment of Output Current
MODE
ADJ(+)
ADJ(-)
Current control
IOH(typ)
resistance
1 Low Low Built in (RINT)
VREF/RINT × 10
2 Low High Built in (RINT)
VREF/RINT × 10 × 0.94
3
High
Low
Built in (RINT)
VREF/RINT× 10 × 1.06
Note 2: RINT(TYP) = 3.61 kΩ
*Complement explanation
Here shows the general usage of the modes 1 to 3 as follows.
MODE 1 is set by connecting the ADJ(+) and ADJ(-) terminals with VSS. In the MODE1 state, by cutting the
bonding wire connected with ADJ(+) or ADJ(-), the IC enters the MODE2 or MODE3, respectively. The current in
MODE1 can be corrected by about –6 % or +6 % in MODE2 or MODE3, respectively.
6585-6/11
6 Page | |||
ページ | 合計 : 11 ページ | ||
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PDF ダウンロード | [ LC7958NC データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
LC7958NC | 64-Bit LED Driver for 300 dpi Printers | Sanyo Semicon Device |