SGM41538
1- to 4-Cell Battery Charge Controller with Hybrid Power Boost and Battery-Only-Boost Modes, Power Monitoring and SMBus
The SGM41538 and SGM41538B are efficient synchronous multi-chemistry chargers for 1- to 4-cell batteries optimized for high density applications with minimum number of external components.
Hybrid Power Boost mode (HPB) is supported in which the battery can assist the adapter when the system demand is higher than the adapter rated power. It also features an ultra-fast changeover from charging to discharging and does not crash when switching between different operating modes.
If the adapter is not present and VBAT is above the minimum operation system voltage (VSYSMIN), BATFET will directly connect the battery to the system. Battery-Only-Boost mode is also supported when VBAT drops close to VSYSMIN or lower. In this case, the Boost converter is activated to boost the low battery voltage and regulate the system voltage until battery stored energy is completely utilized and depleted.
Device supply source is automatically selected between battery or adapter. The integrated gate drivers for the external N-MOSFETs (ACFET, RBFET and BATFET) are powered by two internal charge pumps.
The integrated SMBus interface of the SGM41538 and SGM41538B allows the power management controller to accurately set and regulate the input current, charge current, discharge current, and the charge voltage. It also provides a comprehensive set of programmable protection features.
Adapter current, battery discharge current, and system power are monitored through their respective pins (IADP, IDCHG, PMON) such that the host can throttle the CPU and reduce system power whenever needed.
The SGM41538 and SGM41538B are available in a Green TQFN-4×4-28BL package and can operate in the -40℃ to +125℃ junction temperature range.
- Hybrid Power Boost Mode (HPB) Allows System Powering from Adapter and Battery Together
- Ultra-Fast 80μs Response for Entering HPB
- Battery-Only-Boost Mode Allows Powering the System in Low Battery State without Adapter
- Two-Level Input Current Limiting for Maximum Adapter Power Utilization and Minimal Battery Discharge
- Charges 1- to 4-Cell Packs from 4.5V to 24V Adapters
- Accurate Power/Current Monitoring for CPU Throttling
- -1.7%~2.3% Current Monitor Accuracy
- -5%~5% System Power Monitoring Accuracy (PMON)
- Comprehensive nPROCHOT Protection Profile
- Automatic Adapter/Battery Source Selection by NMOS
- Fast ACFET Turn-On (100μs)
- Accurate Input Current, Charge Voltage, Charge Current and Discharge Current Limit Programming
- -0.3%~0.35% Charge Voltage (16mV/Step)
- -2.2%~2.5% Input Current (64mA/Step)
- -1.5%~3.5% Charge Current (64mA/Step)
- -3.5%~1.5% Discharge Current (512mA/Step)
- Comprehensive Integrated Charging Functions
- Battery LEARN Function
- Battery Presence Monitor
- Boost Mode Indicator
- Internal Loop Compensation
- Bootstrap (BTST) Diode
- Improve Safety Protections for Over-Voltage, Over-Current, Battery, Inductor, and MOSFET Short-Circuit
- 4 Switching Frequencies:
300kHz, 400kHz, 600kHz and 800kHz - Real-Time System Control with ILIM Pin Current Limit
Systems with Battery/Capacitor Backup
Notebooks, Ultra-Books, Detachable, and Tablet PCs
Industrial and Medical Equipment
Portable Equipment
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM41538XTSX28G/TR | アクティブ | TQFN-4×4-28BL | 28 | YES | YES | YES | YES | MSL3 | -40℃ to +125℃ | 閲覧 | 閲覧 | 1-24 units : $2.45/unit 25-99 units : $2.1/unit 100-249 units : $1.75/unit 250-499 units : $1.4/unit 500-999 units : $1.225/unit 1000-9999 units : $0.91/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 84 days 1000K and above : 112 days |
* 再販価格は参考価格です。正式な見積もりについては、代理店にお問い合わせください。
** 提供されるリードタイムは参考情報であり、異なる状況に応じて変更される可能性があります。
