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TPS658620ZQZR датащи(PDF) 6 Page - Texas Instruments

номер детали TPS658620ZQZR
подробное описание детали  Advanced Power Management Unit
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS658620
Advanced Power Management Unit
SLVS993 – OCTOBER 2009
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RTC_OUT LDO
VO(RTC_OUT)
RTC_OUT output voltage
(1):V
O(RTC_OUT)TYP=1.25, 1.50, 1.8,
V
Output Voltage, Selectable via I
2C
2.5, 2.7,2.85,3.1,3.3
Dropout voltage, I(RTC_OUT) = –15 mA
600
mV
V(SYS) = 2.8 V
Total accuracy, V(AC):2V to 4.7V, –15mA load,
–5%
5%
V(BAT1)=V(BAT2)=V(USB)=0V
Load regulation, V(AC)=3.5V,
1%
load: 1mA
→ –15mA
Line regulation, 5mA load,V(AC): 3.5V
→18V,
1%
V(BAT1) =V(BAT2) =V(USB) =0V
ISHRTC
Short Circuit current limit
20
mA
V(RTCGOOD)
RTC_OUT power good fault detection
2.3
2.35
2.45
V
Falling RTC_OUT pin voltage, set via I
2C
threshold
1.8
1.90
2.0
VHYS(RTC)
Power good fault detection hysteresis
Rising RTC_OUT pin voltage (Referenced to V(RTCGOOD) threshold)
50
75
130
mV
VUVLO_RTC
Internal RTC UVLO detection threshold
VRTC Decreasing
–10%
1.5
10%
V
VUVLO_RTC_HYS
UVLO detection hysteresis
VRTC Increasing
100
150
200
mV
BOOT-UP TIMING
TPOR
Power-on-reset delay
Fixed time, measured from 2V2>UVLO
7.2
8
8.8
ms
TBOOT
Boot-up time
Fixed time
500
ms
Accuracy, referenced to TBOOT(tTYP)
–10%
10%
THOTPLUG
Hot plug deglitch time
Fixed time
675
750
825
ms
TWAKEUP
Wakeup pulse width
Fixed time
225
250
275
µs
TCHECK
RTC check wait time
Fixed time
2.7
3
3.3
ms
TMAX
RTC_ON watchdog timer
Fixed time
4
×T
NORTC
ms
TNORTC
NORTC pin pulse width value
Fixed time
10
ms
Accuracy, relative to TNORTC (TYP)
–10%
10%
KNOPOWER
NOPOWER pin pulse width const.
TNOPOWER = KNOPOWER × CNOPOWER
0.25
ms/nF
Pulse width accuracy, CNOPOWER < 400nF
–25%
25%
TWAIT
Reboot and sleep request timeout
Fixed time
18
20
22
ms
TWAIT1
4.5
5
5.5
ms
TSYNCEND
Synchronization complete delay
Measured from all supplies synchronized
4.5
5
5.5
ms
TSYNCDLY
Supply sync delay time
Regulator specific. See Table 3-17
TSYNCDLY(TYP) = 1.25, 2.5, 3.75, 15,
ms
20, 32, 40, 64
Accuracy, relative to TSYNCDLY(TYP)
-10
+10
POWER GOOD AND THERMAL FAULT DETECTION
TDGL(PGFLT)
Power good deglitch time
Applies to all non-masked power good signals, output voltage falling
4
5
6
ms
edge.
TSHUT
Thermal shutdown
Increasing junction temperature
150
°C
THYS(SHUT)
Thermal shutdown hysteresis
Decreasing junction temperature
30
°C
TDGL(TSHUT)
Thermal shutdown detection delay
Rising temperature
15
20
25
µs
RESUME CONTROL TIMING
TRESUME(H)
RESUME pulse width high
550
ms
TRESUME(L)
RESUME pulse width low
1500
ms
SEQUENCER REBOOT CONTROL
VHOTRST
Reboot control threshold
Reboot started when normal state is set and
0.4
V
V(HOT_RST) < VREBOOT for t > TDT(HRST)
THRST(H)
HOT_RST max pulse width
60
ms
TDT(HRST)
HOT_RST min detection pulse width
HOT_RST deglitch
4
16
µs
(1)
Setting the RTC_OUT output voltage below the RTC_OUT power good threshold will result in a NORTC pulse being always generated
during reboot cycles or when exiting sleep.
Setting the RTC_OUT output voltage below VUVLO_RTC disables the use of the internal real time clock counter and xtal oscillator.
Electrical Specifications
6
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