MAX1737EEI+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-efficiency, Low-power, Battery Charger
• Package: 28-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Maxim Integrated's MAX1737EEI+T is a highly efficient battery charger IC designed for low-power applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 4.1V to 28V
• Charging Current: Up to 2A
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Standby Current: Less than 10µA

Pin Configuration

The MAX1737EEI+T has a total of 28 pins. The pin configuration is as follows:

1. VCC
2. GND
3. BAT
4. PROG
5. STAT
6. TS
7. ISET
8. ILIM
9. VREF
10. VFB
11. VSENSE
12. VOUT
13. PGND
14. COMP
15. FB
16. EN
17. SS
18. CS
19. RAMP
20. AGND
21. BST
22. SW
23. LX
24. VIN
25. PGOOD
26. CLK
27. INT
28. NC

Functional Features

• High-efficiency synchronous buck charger
• Programmable charging current and voltage
• Accurate current and voltage regulation
• Thermal regulation and protection
• Overvoltage and overcurrent protection
• Battery temperature monitoring
• Charge status indication

Advantages and Disadvantages

Advantages

• High charging efficiency leads to faster charging times.
• Wide input voltage range allows for versatile applications.
• Accurate current and voltage regulation ensures safe charging.
• Comprehensive protection features safeguard the battery and charger.
• Compact package size enables space-saving designs.

Disadvantages

• Limited maximum charging current of 2A may not be suitable for high-power applications.
• Requires external components for complete functionality.
• Relatively higher cost compared to some other battery charger ICs.

Working Principles

The MAX1737EEI+T operates as a synchronous buck charger, converting the input voltage to a regulated output voltage suitable for charging batteries. It utilizes a feedback control loop to maintain accurate charging current and voltage levels. The IC incorporates various protection mechanisms to prevent overvoltage, overcurrent, and overheating conditions. Additionally, it monitors the battery temperature to ensure safe charging.

Application Field Plans

The MAX1737EEI+T is widely used in various low-power applications that require efficient battery charging. Some potential application fields include:

1. Portable electronic devices (e.g., smartphones, tablets, portable media players)
2. Wearable devices (e.g., smartwatches, fitness trackers)
3. IoT (Internet of Things) devices
4. Wireless sensors and remote monitoring systems
5. Medical devices and healthcare equipment

Alternative Models

For those seeking alternative options, below are some detailed and complete alternative models to consider:

1. Texas Instruments BQ24075RGTR
2. Linear Technology LTC4000-1
3. STMicroelectronics STBC02
4. ON Semiconductor NCP1851
5. Analog Devices ADP5065

These alternative models offer similar functionalities and can be evaluated based on specific requirements and preferences.

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