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參數(shù)資料
| 型號(hào)： | LTC2927CDDB#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大小： | 264K |
| 代理商： | LTC2927CDDB#TRM |
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LTC2927
4
2927fb
PIN FUNCTIONS
VCC (V)
0
0.0
V
SDO(OL)
(V)
0.2
0.4
0.6
0.8
1.0
1234
2927 G0
5
ISDO = 5mA
ISDO = 10μA
2.5
3.0
3.5
4.0
4.5
6.0
5.5
5.0
VCC (V)
10
I TRACK
(mA)
20
30
40
50
60
2927 G07
VTRACK = 0V
ITRACK (mA)
1
0
ERROR
(%)
1
2
3
4
5
234
2927 G0
5
ERROR =
VTRACK
0.8V
–1
IFB
ITRACK
Tracking Cell Error vs ITRACK
VSDO(OL) vs VCC
VCC (Pin 1/Pin 8): Supply Voltage Input. Operating range
is from 2.9V to 5.5V. An undervoltage lockout asserts SDO
until VCC > 2.5V. VCC should be bypassed to GND with a
0.1μF capacitor.
SDO (Pin 2/Pin 7): Slave Supply Shutdown Output. SDO
is an open-drain output that holds the shutdown (RUN/SS)
pin of the slave supply low until the VCC pin is pulled above
2.5V, and the ON pin is pulled above 1.23V, or RAMP is
above 200mV. SDO is pulled low again when both RAMP
< 200mV and ON < 1.23V. If the slave supply is capable
of operating with an input supply that is lower than the
LTC2927’s minimum operating voltage of 2.9V, the SDO
pin can be used to hold off the slave supply. Tie the SDO
pin to GND if unused.
FB (Pin 3/Pin 6): Feedback Control Output. FB pulls up
on the feedback node of the slave supply. Tracking is
achieved by mirroring the current from TRACK into FB.
A resistive divider connecting RAMPBUF and TRACK will
force the output voltage of the slave supply to track RAMP.
To prevent damage to the slave supply, the FB pin will not
force the slave’s feedback node above 2.3V. In addition,
the LTC2927 will not actively sink current from this node,
even when it is unpowered.
TSOT/DFN Packages
MAX ITRACK vs VCC
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50
10
18
16
14
12
V
RAMPBUF(OL)
(mV)
20
22
24
26
28
–25
0
25
50
2927 G05
75
100
TEMPERATURE (°C)
–50
1.210
1.215
V
ON(TH)
(V)
1.220
1.225
1.230
1.235
1.240
–25
0
25
50
2927 G04
75
100
TEMPERATURE (°C)
–50
40
45
V
RAMPBUF(OH)
(mV)
50
55
60
65
70
–25
0
25
50
2927 G06
75
100
VRAMPBUF(OL) vs Temperature
VRAMPBUF(OH) vs Temperature
VON(TH) vs Temperature
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2927CTS8#PBF | 制造商:Linear Technology 功能描述:Power Supply 8-Pin TSOT-23 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Cut Tape Single Power Supply Tracking Controller |
| LTC2927CTS8#TR | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC2927CTS8#TRM | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC2927CTS8#TRMPBF | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC2927CTS8#TRPBF | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
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