LTC2931
13
2931fb
COMP1 COMP2 COMP3 COMP4 COMP5 COMP6
LTC2931
12V (9.6V THRESHOLD)
12V SUPPLY STATUS
DONE
2.5V
–5.2V
1.8V
3.3V
5V
2931 F06
365k
1%
487k
1%
5V
10k 10k
10k
0.1μF
t
RST
= 9.4ms
4.7nF
WDI
WDO
VPG
GND
CRT CWT
V1
V2
V3
V4
V5
V6
RST
VREF
SYSTEM
LOGIC
10k
LT3028
V
IN
3.3V
V
OUT
SHDN
LTM4600
V
IN
V
OUT
RUN
10k
LT3028
V
IN
1.8V
V
OUT
SHDN
10k
LTC3704
V
IN
–5.2V
V
OUT
RUN/UVLO
10k
LT3028
V
IN
2.5V
V
OUT
SHDN
100k
1%
121k
1%
1820k
1%
100k
1%
R1
16.2k
1%
R2
86.6k
1%
LTC2950-1
V
IN
INT
PB
KILL
EN
APPLICATIONS INFORMATION
Figure 6. Five Supply Power-Up Sequencer with Push Button (Watchdog Functions Disabled)
LTC2931
14
2931fb
APPLICATIONS INFORMATION
2V/DIV
PB
5V
3.3V
2.5V
1.8V
–5.2V
DONE
RST
10ms/DIV
2931 FO7
Figure 7. Five Supply Power-Up Sequencing (Based on Circuit in Figure 6)
LTC2931
15
2931fb
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
PACKAGE DESCRIPTION
F Package
20-Lead Plastic TSSOP (4.4mm)
(Reference LTC DWG # 05-08-1650)
F20 TSSOP 0204
0.09 – 0.20
(.0035 – .0079)
0°8°
0.25
REF
0.50 – 0.75
(.020 – .030)
4.30 – 4.50**
(.169 – .177)
134
5
6
7
8 910
111214 13
6.40 – 6.60*
(.252 – .260)
20 19 18 17 16 15
1.10
(.0433)
MAX
0.05 – 0.15
(.002 – .006)
0.65
(.0256)
BSC
6.40
(.252)
BSC
0.19 – 0.30
(.0075 – .0118)
TYP
2
MILLIMETERS
(INCHES)
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
*
**
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
RECOMMENDED SOLDER PAD LAYOUT
0.45 ±0.05
0.65 BSC
4.50 ±0.10
6.60 ±0.10
1.05 ±0.10

LTC2931HF#TRPBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Configurable Six-Input Supply Monitor with Watchdog
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union