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MAS9251 Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part # MAS9251
Description  REGULATED CHARGE PUMP DC/DC CONVERTER
PDF  11 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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MAS9251 Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

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DA9251.001
25 October, 2001
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Threshold High
TH
145
160
175
°C
Threshold Low
TL
135
150
165
°C
The hysteresis of 10
oC prevents the device from turning on too soon after thermal shut-down.
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Shutdown Voltage
OFF State
ON State
VCTRL
−0.3
1.6
0.55
VIN + 0.3
V
Shutdown Control Input Pin
Current
ICTRL
VCTRL = VIN
VCTRL = 0 V
4
0
10
µA
If CTRL-pin is not connected, MAS9251 is in OFF state (900 k
Ω pull-down resistor to ground).
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Thermal Resistance MSOP-8
(Junction-to-Air)
RJA
typical PC board mounting
206.3
°C/W
Maximum Power Dissipation
Pd
any ambient temperature
JA
A
MAX
J
MAX
d
R
T
T
P
−
=
W
Note 1
Efficiency
η
VIN = 3 V, IOUT = 50 mA
80
%
I‚‡rà : TJ(MAX) denotes maximum operating junction temperature (+125°C), TA ambient temperature, and RJA junction-to-air thermal
resistance (206.3°C/W).
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Start-up Time (from control
signal edge to 90% of VNOM)
tstart-up
VCTRL = 0 to VIN, VIN = 3 V,
IOUT
≤ 100 mA
1ms
Switching Frequency
FOSC
0.611.8
MHz



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