Datasheet
Table Of Contents
- Features
- Applications
- Description
- Typical Application
- Absolute Maximum Ratings
- Pin Configuration
- Order Information
- Electrical Characteristics
- Typical Performance Characteristics
- Pin Functions
- Functional Diagram
- Timing Diagram
- Operation
- Applications Information
- Typical Applications
- Package Description
- Revision History
- Typical Application
- Related Parts

LTC2991
28
2991fd
For more information www.linear.com/LTC2991
Oven Control with Power Monitor
Remote Temperature Sensing with Extended ESD Performance
V
CC
2-WIRE
I
2
C INTERFACE
V1
LTC2991
T
AMBIENT
5V
GND
SDA
SCL
ADR0
ADR1
ADR2
V3
V4
V5
V6
OTHER APPLICATIONS
VOLTAGE AND CURRENT (POWER) MONITOR
OVEN
T
SET
70°C
TEMPERATURE
SENSOR
HEATER
V
CC
V7
V8
PWM
V2
2991 TA11
–
+
100k
1µF
LT6240
100k
1M
V
CC
5V
VOLTAGE, CURRENT, TEMPERATURE AND PWM CONFIGURATION:
CONTROL REGISTER 0x06: 0x01
T
AMBIENT
REG 1A, 1B 0.0625°C/LSB
V
HEATER
REG 0A, 0B 305µV/LSB
I
HEATER
REG 0C, 0D 19.075µV/R
HEATER
A/LSB
T
OVEN
REG 16, 17 0.0625°C/LSB
V
CC
REG 1C, 1D 2.5V + 305.18µV/LSB
0x07: 0xA0
PWM, T
INTERNAL
, V
CC
REG:
PWM REGISTER
0x08: 0x50
0x09: 0x1B
V
CC
LTC2991
3.3V
GND
SDA
SCL
V1
V2
500Ω
500Ω
2991 TA13
CONTROL REGISTER 0x06 = 0xAA
REMOTE TEMPERATURE SENSOR REG OB, OB: 0.0625 °C/LSB
MMBT3904
> 8kV ESD
MMBT3904
REMOTE
TEMPERATURE
SENSOR
PROTECTION
DEVICE
Typical applicaTions