Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
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.
Electrical Characteristics
PARAMETER
Input Supply Voltage
Input Supply Current
Shutdown Supply Current
Shutdown Inductor Supply
Current
Undervoltage Lockout
Undervoltage Lockout
Hysteresis
EL OUTPUTS (V
1
, V
2
, COM)
Peak-to-Peak Output Voltage
V
1
, V
2
High-Side Switch
On- Resistance
V
1
, V
2
Low-Side Switch
On- Resistance
COM High-Side Switch
On- Resistance
COM Low-Side Switch
On- Resistance
High-Side Switch Off-Leakage
Low-Side Switch Off-Leakage
EL Lamp Switching
Frequency
ESD Protection
(COM, V
1
, V
2
Only)
(V
DD
= +2.7V to +5.5V, C
LAMP_TOTAL
= 10nF, C
CS
= 3.3nF, L
X
= 220µH (I
SAT
= 170mA, R
S
= 5.5Ω), T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at V
DD
= +3.0V, T
A
= +25°C.) (Note 2)
SYMBOL
V
DD
I
IN
I
SHDN
I
LX_SHDN
V
UV
V
UV_HYST
V
DIM_
= +0.5V
V
DIM_
= +1V
V
DIM_
= +1.3V
105
210
250
R
SLEW
= 375kΩ, F
EL
= 200Hz,
(V1,V2) - V
COM
= 300V
P-P
EN = GND
T
A
= +25°C
40
T
A
= -40°C to +85°C
CONDITIONS
MIN
2.7
TYP
MAX
5.5
700
150
400
1.5
1.8
2.1
125
2.3
UNITS
V
µA
nA
µA
V
mV
EN = GND, LX = V
DD
,
CS = V
DD
V
DD
falling
130
260
300
1.5
0.7
0.7
0.4
162
310
350
3.0
2.0
1.5
1.0
+1
+1
kΩ
kΩ
kΩ
kΩ
µA
µA
Hz
V
V_ - V
COM
R
ONHS_VN
R
ONLS_VN
R
ONHS_COM
R
ONLS_COM
R
ONHS_LEAK
R
ONLS_LEAK
f
EL
V
DD
= +3V
I
SOURCE
= 1mA
I
SINK
= 1mA
I
SOURCE
= 1mA
I
SINK
= 1mA
V
1
, V
2
, V
COM
= 0, V
CS
= 150V
V
1
, V
2
, V
COM
= 150V, V
CS
= 150V
C
EL
= 872pF, R
SLEW
= 375kΩ
Human Body Model
IEC 61000-4-2 Contact Discharge
IEC 61000-4-2 Air-Gap Discharge
-1
-1
210
250
±15
±4
±4
290
kV
www.maximintegrated.com
Maxim Integrated
│
3
MAX14514
Dual Electroluminescent Lamp Driver
Electrical Characteristics (continued)
PARAMETER
BOOST CONVERTER
SYMBOL
(V
DD
= +2.7V to +5.5V, C
LAMP_TOTAL
= 10nF, C
CS
= 3.3nF, L
X
= 220µH (I
SAT
= 170mA, R
S
= 5.5Ω), T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at V
DD
= +3.0V, T
A
= +25°C.) (Note 2)
CONDITIONS
V
DIM_
= +0.5V
Output Regulation Voltage
Boost Switching Frequency
Switch On-Resistance
LX Leakage Current
CS Input Current
CONTROL INPUT (SW)
Input-Voltage High Threshold
Input-Voltage Low Threshold
Input Low Current
Input High Current
CONTROL INPUT (EL)
Input-Voltage High Threshold
Input-Voltage Low Threshold
Input Low Current
Input High Current
CONTROL INPUT (CAP)
CAP Switching Frequency
Slow Turn-On Time
Fast Turn-On CAP Threshold
Nonfast Turn-On CAP
Threshold
Input Leakage Current
CONTROL INPUT (SLEW)
Force Voltage
High-Voltage Output
Slew Rate
CONTROL INPUTS (DIM1, DIM2)
Input High Voltage
Input Low Voltage
Input Low Current
Input High Current
PWM Frequency Range
V
IH_DIM
V
IL_DIM
I
IL_DIM
I
IH_DIM
Max output voltage
Min output voltage
V
DIM_
= 0, R
SLEW
= 375kΩ
V
DIM_
= V
DD
2.2
-1
0.2 to 1
2.6
1.3
0.15
3.0
+1
V
V
µA
µA
MHz
V
FORCE
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ
0.9
0.98
32
1.05
V
V/100µs
f
CAP
t
SLOW_ON
V
FAST_CAP
V
NON-FAST_
CAP
MIN
52
105
125
80
-1
TYP
65
130
150
100
MAX
81
155
175
120
20
+1
50
UNITS
V
CS
f
SW
R
LX
I
LX
I
CS
V
DD
= +3V
V
DIM_
= +1V
V
DIM_
= +1.3V
V
kHz
Ω
µA
µA
C
SW
= 96pF, R
SLEW
= 375kΩ
I
SINK
= 25mA, V
DD
= +3V
V
LX
= +150V
No load, V
CS
= +150V, V
EN
= 0,
V
DIM_
= 0
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ, V
CS
= +78V,
C
EL
= V
DD
, V
DIM_
= V
DD
R
SLEW
= 375kΩ, V
CS
= +78V,
C
EL
= V
DD
, V
DIM_
= V
DD
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ, C
CAP
= 1.25nF
R
SLEW
= 375kΩ, C
CAP
= 1.25nF
R
SLEW
= 375kΩ
R
SLEW
= 375kΩ
CAP = V
DD
,
R
SLEW
= 375kΩ
Normal operation
Shutdown mode
V
IH_CSW
V
IL_CSW
I
IL_CSW
I
IH_CSW
V
IH_CEL
V
IL_CEL
I
IL_CEL
I
IH_CEL
0.9
0.43
43
5
1.08
0.22
1.3
1.3
180
V
DD
-0.35
0.98
0.49
1.06
0.55
79
7.5
1.32
0.39
1.88
1.88
V
V
µA
µA
V
V
µA
µA
Hz
s
V
300
0.3
410
1.4
0.3
-100
1
100
V
µA
nA
I
IH_CAP
www.maximintegrated.com
Maxim Integrated
│
4
MAX14514
Dual Electroluminescent Lamp Driver
Electrical Characteristics (continued)
(V
DD
= +2.7V to +5.5V, C
LAMP_TOTAL
= 10nF, C
CS
= 3.3nF, L
X
= 220µH (I
SAT
= 170mA, R
S
= 5.5Ω), T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at V
DD
= +3.0V, T
A
= +25°C.) (Note 2)
PARAMETER
Low-Peak Detector Threshold
Low-Peak Detector Hysteresis
CONTROL INPUT (EN)
Input Logic-High Voltage
Input Logic-Low Voltage
THERMAL SHUTDOWN
Thermal Shutdown
Thermal Shutdown Hysteresis
158
8
°C
°C
V
IH_EN
V
IL_EN
1.4
0.3
V
V
SYMBOL
V
LPD
V
LPD_HYST
CONDITIONS
MIN
0.13
100
TYP
MAX
0.35
UNITS
V
mV
Note 2:
All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
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便携式医疗设备的特殊性决定了它们应该是对用户友好的、必须工作在无菌环境下，并且空间占用小、耗能低。 同时，便携式医疗设备还需要足够的计算能力以便处理医疗数据，能够连接到无线或有线接口以便记录和发送数据。从设计人员的角度考虑，上述需求需要低功耗的单片机（MCU）和数字信号控制器（Digital Signal Controller，DSC）。 正是有了嵌入式处理器，设计人员才有可能设...[详细]
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