Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

SOT25.png

Back to MicroProcessor Supervisory IC / Reset IC / Voltage Detector

PT7M7438

User-Adjustable Active High open-drain and SOT23-6 Supervisory Circuit

Datasheet

Contact Sales

Product Description

The PT7M7436/37/38 are dual-level battery monitors with internal hysteresis. These devices are offered with dual low-battery output indicators which can be used to indicate three battery conditions: good (operate system in normal mode), weak (operate system in low-power mode), or empty (disable the system).

Features

User-Adjustable Low/High Thresholds with 585mV/615mV Internal Reference
Low Current (1.5μA typ)
Dual Low-Battery Outputs
Push-Pull active low, Open-Drain active low and Open-Drain active high output options
90ms Minimum LBOA/LBOL Timeout Period
Immune to Short Battery Voltage Transients
-40°C to + 85°C Operating Temperature Range

Applications

Monitoring lithiumion (Li+ ) cells or multicell alkaline/ NiCd/ NiMH power supplies.

Product Specifications

Product Parameters

Fixed Detect Voltages (V)	N/A V
Adjustable Detect Voltage Reference Voltage (V)	0.585 V
Number of Channels	1
Minimum Operating Voltage (V)	1.8 V
Maximum Input Voltage (V)	5.5 V
Quiescent Current (µA)	1.5 µA
Typical Time Delay (µs)	100 µs
Reset Period (ms)	200 ms
RESET Output (Active High)	Yes (Active High)
RESET Output (Active Low)	No (Active Low)
Manual RESET	No
Watchdog	No
Watchdog Time (s)	None s
Power Fail Comparator Threshold (V)	None V
Reset Output Topology	Open-Drain
Ambient Temperature Range (°C)	-40 to 85 °C

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

Request Documents