參數(shù)資料
型號(hào)： MAX749
廠商： Maxim Integrated Products, Inc.
元件分類： 通用總線功能
英文描述： Synchronous 4-Bit Up/Down Binary Counters 16-CFP -55 to 125
中文描述： 數(shù)字調(diào)節(jié)LCD偏置電源
文件頁(yè)數(shù)： 2/12頁(yè)
文件大?。?/td> 105K
代理商： MAX749
T
A
= T
MIN
to T
MAX
MIN
MAX
400
125
25
300
85
M
Digitally Adjustable LCD Bias S upply
2
______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V+ ................................................................................-0.3V, +7V
CTRL, ADJ , FB, DLOW, DHI, CS.....................-0.3V, (V+ + 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
Operating Temperature Ranges:
MAX749C_A........................................................0°C to +70°C
MAX749E_A.....................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
ELECTRICAL CHARACTERISTICS
(2V < V+ < 6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings"may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
The device is in regulation when V
FB
= 0V (see Figures 3 - 6).
Note 2:
These tests performed at V+ = 3.3V. Operation over supply range is guaranteed by supply rejection test of full-count current.
Note 3:
V
IH
is guaranteed by design to be 1.8V min for V+ = 2V to 6V for T
A
= T
MIN
to T
MAX
. V
IL
is guaranteed by design from
T
A
= T
MIN
to T
MAX
.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+ Voltage
FB Source Current
Zero-Count FB Current
Full-Count FB Current
FB Offset Voltage
2
6
V
I
FBS
On power-up or reset, V
FB
= 0V (Note 1)
V
FB
= 0V
V
FB
= 0V
12.80
0.45
1.43
13.33
13.86
0.55
1.53
±15
μA
I
FBS
I
FBS
mV
DAC Step Size (Note 2)
DAC Linearity (Note 2)
Supply Rejection
Switching Frequency
Logic Input Current
Logic High Threshold (Note 3)
Logic Low Threshold (Note 3)
Monotonicity guaranteed, V
FB
= 0V
V
FB
= 0V
V+ = 2V to 6V, full-count current
1.00
1.56
2.12
±1
1.5
%I
FBS
%I
FBS
%I
FBS
kHz
nA
V
V
100 to 500
0V < V
IN
< V+, CTRL, ADJ
CTRL, ADJ
CTRL, ADJ
±100
V
IH
V
IL
1.6
Quiescent Current
Shutdown Current
V+ to CS Voltage
DHI Source Current
DHI Drive Level
DLOW On Resistance
60
15
180
μA
μA
mV
mA
V
Current-limit trip voltage
V+ = 2V, V
DHI
= 1V
No load
V+ = 2V, V
DLOW
= 0.5V
110
24
140
50
V+
5
V+ - 50mV
10
0.4
TIMING CHARACTERISTICS
T
A
= +25°C
TYP
MIN
MAX
PARAMETER
SYMBOL
CONDITIONS
UNITS
Minimum Reset Pulse Width
t
R
V+ = 5V
Not tested
Not tested
100
Minimum Reset Setup
Minimum Reset Hold
t
RS
t
RH
0
0
0
0
t
SH
V+ = 2V
V+ = 5V
V+ = 2V
V+ = 5V
V+ = 2V
V+ = 5V
15
10
170
60
70
20
85
85
400
150
200
85
100
100
500
200
250
100
Minimum ADJ High Pulse Width
t
SL
Minimum ADJ Low Pulse Width
Minimum ADJ Low to CTRL Low
t
SD
ns
V+ = 2V
ns
ns
ns
ns
ns
相關(guān)PDF資料
PDF描述
MAX749CSA 4-Bit D-type Registers with 3-State Outputs 16-CDIP -55 to 125
MAX749EPA 4-Bit D-type Registers with 3-State Outputs 20-LCCC -55 to 125
MAX749ESA Digitally Adjustable LCD Bias Supply
MAX7524 Retriggerable Monostable Multivibrators 16-CFP -55 to 125
MAX7624 CMOS 8-Bit Buffered Multiplying DACs
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