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L6260 데이터시트(PDF) 16 Page - STMicroelectronics

부품명 L6260
상세설명  4.5 – 5.5V DISK DRIVER SPINDLE & VCM, POWER & CONTROL COMBO?셎
PDF  30 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6260 데이터시트(HTML) 16 Page - STMicroelectronics

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BANDGAP
REFERENCE
POR
TIMER
1.25V reference
HYSTERESIS
CONTROL
+
+
-
-
Comp
Comp
UV1 pin
UV2 pin
1.25V(rising)
1.23V(falling)
POR pin
POR-DLY pin
External Cap
RESET DURATION =
CPOR_DLY X 1.25
2E -6
D94IN092
Figure 3.
POR Parameters
SYMBOL
PARAMETER
MIN.
TYP.
MAX
UNITS
CPORDLY
POR delay capacitor
220
2200
4700
pF
Tdelay
Delay time
(*)
(*)
(*)
UVrise
Rising edge reference
1.25
V (**)
UVfall
Falling edge reference
1.23
V (**)
TUVD
Under voltage detect to POR low
250
ns
(*) See previous equation
(**) See hysteresis transfer function below
1.25V (POWER GOING UP)
POWER OK
UV/2
UNDER VOLTAGE DETECTED
1.23V (POWER GOING DOWN)
D94IN093
Figure 4: Hysteresis Comparitor Transfer Characteristic for Under Voltage Detection.
L6260
16/30



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