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參數(shù)資料
| 型號： | ADM8845ACPZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | 20-21 (9 Contact) Pin Insert; For Use With:Amphenol MIL-C-5015 97 Series Circular Connectors; No. of Contacts:9; Gender:Male; Operating Voltage:700V |
| 中文描述： | LED DISPLAY DRIVER, QCC16 |
| 封裝： | 3 X 3 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-220VEED-2, LFCSP-16 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 341K |
| 代理商： | ADM8845ACPZ-REEL7 |
Preliminary Technical Data
ADM8845
ADM8845—SPECIFICATIONS
(V
CC
= +2.6V TO 5.5V;
T
A
= -40°C to 85
°C
unless otherwise noted; C1,C2 = 1.0μF; C3 = 2.2μF; C4 = 4.7μF)
Table 1.
PARAMETER
Min
Typ
Input Voltage,V
CC
2.6
Supply Current,I
CC
2.6
Shutdown Current
Charge-Pump Frequency
1.5
Charge Pump Mode Thresholds
1.5x to 2x
3.33
Accuracy
2x to 1.5x
3.36
Accuracy
Hysteresis
40
1x to 1.5x
4.77
Accuracy
1.5x to 1x
4.81
Accuracy
Hysteresis
40
Iset Pin
LED : LED Matching
-1
LED : I
SET
Accuracy
-1
Rev. PrJ 06/04| Page 3 of 18
Max
5.5
5
5
4
4
4
4
+1
+1
Units
V
m A
uA
M H z
V
%
V
%
m V
V
%
V
%
m V
%
%
Test Conditions
All 6 LEDs Disabled, Vcc = 3.3V, R
SET
= 7.08kOhm
CTRL1 = 1, CRTL2 = 1
T
A
= 25°C
I
LED
= 20mA, V
FB
=0.4V
I
LED
= 20mA, R
SET
= 7.08K, V
FB
=0.4V, Vcc = 3.6V, T
A
= 25°C,
Note 2
I
SET
= 20mA
1x Mode
1.5x Mode
2x Mode
See Note 1 and Figure 22
CTRL1 = 1, CRTL2 = 1, Vcc = 3.4V, V
FB
= 0.2V,
I
FB
= 20mA
Vcc = 3.6V, I
LED
= 20mA, All 6 LEDs Enabled
Iset pin voltage
I
LED
to I
SET
Ratio
Min Compliance on FB pin
Charge Pump Output Resistance
LED Current
PWM
Digital Inputs
Input Hi
Input Low
Input Leakage Current
Charge Pump Power Efficiency
Vout Ripple
THERMAL CHARACTERISTICS
16-Lead LFCSP Package:
θ
JA
= 50°C/Watt
0.1
0.5V
CC
1.18
120
0.2
1.2
3.5
8.0
88
30
0.3
1.7
4.5
11
30
200
0.3V
CC
1
V
V
Ohm
Ohm
Ohm
m A
KHz
V
V
uA
%
m V
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