MAX1749 반도체 회로 부품 판매점
SOT23 Vibrator Motor Driver
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 Maxim Integrated |
19-1455; Rev 1; 6/99
SOT23 Vibrator Motor Driver
General Description
The MAX1749 allows for a constant vibration force while
operating from a +2.5V to +6.5V input range and deliver-
ing up to 120mA. A PMOS pass transistor allows the
80µA supply current to remain independent of the load.
The output voltage can be adjusted from +1.25V to VIN
with an external resistor-divider. When turned off
(ON = low), the MAX1749 supply current drops to 1µA
(max) to minimize battery drain. Other features include
short-circuit protection, thermal shutdown protection,
and reverse battery protection. The MAX1749 is avail-
able in a 5-pin SOT23 package.
____________________________Features
o Fixed 1.25V or Adjustable (1.25V to 6.5V) Output
o Low Cost
o Thermal Overload Protection
o Output Current Limit
o Reverse Battery Protection
o Low 0.1nA Off Supply Current
o Low 80µA Full-Load Supply Current
________________________Applications
Wireless Handset Vibrator Motor Drivers
Pager Vibrator Motor Drivers
Ordering Information
PART
MAX1749EUK-T
TEMP. RANGE
-40°C to +85°C
PIN-
PACKAGE
5 SOT23
TOP
MARK
ADIX
Typical Operating Circuit
2.5V TO 6.5V
CIN
1µF
BATTERY
ON
OFF
IN OUT
MAX1749
ON SET
GND
1.25V
UP TO 120mA
COUT
1µF
Pin Configuration
TOP VIEW
ON 1
5 SET
MAX1749
GND 2
IN 3
4 OUT
SOT23-5
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
SOT23 Vibrator Motor Driver
ABSOLUTE MAXIMUM RATINGS
IN to GND ....................................................................-7V to +7V
Output Short-Circuit Duration ............................................Infinite
SET to GND ..............................................................-0.3V to +7V
ON to GND ..................................................................-7V to +7V
ON to IN....................................................................-7V to +0.3V
OUT to GND ................................................-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (TA = +70°C)
SOT23-5 (derate 7.1mW/°C above +70°C) .................571mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
θJA ...............................................................................+140°C/W
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
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
(VIN = +3.6V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Input Voltage
Output Voltage
Maximum Output Current
Current Limit (Note 2)
Ground Pin Current
SYMBOL
VIN
VOUT
ILIM
IQ
Off Supply Current
IOFF
ON INPUT
ON Input High Threshold
ON Input Low Threshold
VIH
VIL
ON Input Bias Current
ION
SET INPUT
SET Input Leakage Current
ISET
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TSHDN
∆TSHDN
CONDITIONS
0.1mA ≤ IOUT ≤ 50mA, SET = OUT
VOUT = VON = GND
TA = +25°C
TA = +85°C
ON = IN
VSET = 1.4V
TA = +25°C
TA = +85°C
TA = +25°C
TA = +85°C
MIN
2.5
1.13
120
2.0
TYP
1.25
280
80
0.0001
0.02
0
0.05
0.03
0.5
170
20
MAX
6.5
1.37
200
1
0.4
100
10
UNITS
V
V
mA
mA
µA
µA
V
V
nA
nA
°C
°C
Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed through cor-
relation using Statistical Quality Control (SQC) methods.
Note 2: Not tested. For design purposes, the current limit should be considered 120mA minimum to 420mA maximum.
2 _______________________________________________________________________________________
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MAX1749 driver
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