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參數(shù)資料
| 型號： | LTC2902-2CGN |
| 廠商： | Linear Integrated Systems |
| 英文描述： | Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance |
| 中文描述： | 可編程四路電源監(jiān)視器可調(diào)復(fù)位定時器和供應(yīng)公差 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 206K |
| 代理商： | LTC2902-2CGN |
1
LTC2902
2902f
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIOU
Programmable Quad Supply
Monitor with Adjustable Reset Timer
and Supply Tolerance
I
Simultaneously Monitors Four Supplies
I
16 User Selectable Combinations of 5V, 3.3V, 3V,
2.5V, 1.8V, 1.5V and/or
±
Adjustable Voltage
Thresholds
I
Guaranteed Threshold Accuracy:
±
1.5% of Monitored
Voltage Over Temperature
I
Selectable Supply Tolerance: 5%, 7.5%,
10%, 12.5% Below Monitored Voltage
I
Low Supply Current: 43
μ
A Typ
I
Adjustable Reset Time
I
RESET Disable Pin for Margining Applications
I
Open-Drain RST Output (LTC2902-1)
I
Push-Pull RST Output (LTC2902-2)
I
Individual Nondelayed Monitor Outputs for Each Supply
I
Power Supply Glitch Immunity
I
Guaranteed RESET for V
CC
≥
1V
The LTC
2902 is a programmable supply monitor for sys-
tems with up to four supply voltages. One of 16 preset or
adjustable voltage monitor combinations can be selected
using an external resistor divider connected to the pro-
gram pin. The preset voltage thresholds are digitally pro-
grammable to 5%, 7.5%, 10% or 12.5% below the nomi-
nal operating voltage, and are accurate to 1.5% over tem-
perature. All four voltage comparator outputs are con-
nected to separate pins for individual supply monitoring.
The reset delay time is adjustable using an external
capacitor. Tight voltage threshold accuracy and glitch
immunity ensure reliable reset operation without false
triggering. The RST output is guaranteed to be in the
correct state for V
CC
down to 1V and may be disabled
during supply margin testing. The LTC2902-1 features
an open-drain RST output, while the LTC2902-2 has a
push-pull RST output.
The 43
μ
A supply current makes the LTC2902 ideal for power
conscious systems and the part may be configured to
monitor less than four inputs. The LTC2902-1/LTC2902-2
are available in the 16-lead narrow SSOP package.
Quad Supply Monitor with Adjustable Tolerance (5V, 3.3V, 2.5V, 1.8V)
I
Desktop and Notebook Computers
I
Multivoltage Systems
I
Telecom Equipment
I
Portable Battery-Powered Equipment
I
Network Servers
, LTC and LT are registered trademarks of Linear Technology Corporation.
V1
V2
V
REF
V
PG
COMP1
COMP2
COMP3
COMP4
RST
RDIS
T0
T1
GND
10
11
R1
59k
1%
R3
GOOD
R2
40.2k
1%
12
7
9
8
6
15
1
16
2
13
3
14
4
5C
47nF
C2
0.1
μ
F
C1
0.1
μ
F
V4
V3
LTC2902-2
CRT
t
RST
= 216ms
MARGIN
TOLERANCE = 5%
2902 TA01
DC/DC
CONVERTER
1.8V
2.5V
3.3V
5V
SYSTEM
LOGIC
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| LTC2902-2CGN#PBF | 功能描述:IC MONITOR SUPPLY QUAD 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極，開路漏極 復(fù)位:高有效/低有效 復(fù)位超時:最小為 250 ms 電壓 - 閥值:4.37V，4.62V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:管件 產(chǎn)品目錄頁面:1337 (CN2011-ZH PDF) |
| LTC2902-2CGN#TR | 功能描述:IC MONITOR SUPPLY QUAD 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:高有效 復(fù)位超時:- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
| LTC2902-2CGN#TRPBF | 功能描述:IC MON SUPP QD W/RST&SEL 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:高有效 復(fù)位超時:- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
| LTC2902-2IGN | 功能描述:IC MONITOR SUPPLY QUAD 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:高有效 復(fù)位超時:- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
| LTC2902-2IGN#PBF | 功能描述:IC MON SUPP QD W/RST&SEL 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:高有效 復(fù)位超時:- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
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