|

||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

PT0213(06/05)

Ver: 1

1

User-Adjustable Low/High Thresholds with 615mV

Internal Reference

Low Current (0.9A typ)

Single Low-Battery Outputs

Push-Pull LBO, Open-Drain LBO and Open-Drain

LBO options

90ms Minimum LBO Timeout Period

Immune to Short Battery Voltage Transients

-40°C to + 85°C Operating Temperature Range

Monitoring lithiumion (Li+) cells or multicell

alkaline/ NiCd/ NiMH power supplies.

The PT7M7433/34/35 are single-level battery monitors

with internal hysteresis. These devices are offered with

single 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).

The PT7M7433/34/35 are user-adjustable threshold

voltages permitting the user to select the hysteresis range

and consequently the sensitivity of the system to noise. A

wide hysteresis range also prevents chattering that can

result due to battery recovery after load removal.

PT7M7433TA

SOT23-5

PT7M7434TA

SOT23-5

PT7M7435TA

SOT23-5

PT7M7433TAE

SOT23-5(lead-free)

PT7M7434TAE

SOT23-5(lead-free)

PT7M7435TAE

SOT23-5(lead-free)

Table 1. Function comparison of PT7M7433/34

Output

Threshold

Open-Drain

Push-Pull

Item

Part No.

Active high Active low Active low

Single

Dual

Factory

fixed

User

adjustable

Package

1

PT7M7433

-

√

-

√

2

PT7M7434

-

√

-

√

-

√

3

PT7M7435

√

-

√

-

√

SOT23-5