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参数资料
| 型号： | MAX1757EAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHRG LI+ 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 6 V ~ 14 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
MAX1757
Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 14V Switch
V DCIN < BATT
V BATT < UNDERVOLTAGE
THRESHOLD
V DCIN > V BATT
RESET
FASTCHG = HIGH
FULLCHG = HIGH
FAULT = HIGH
SHUTDOWN
FASTCHG = HIGH
FULLCHG = HIGH
FAULT = HIGH
SHDN HIGH
SHUTDOWN IS
ENTERED FROM ALL STATES
WHEN SHDN IS LOW.
PREQUAL
FASTCHG = LOW
PREQUAL
TIMEOUT
FAULT
FASTCHG = HIGH
FULLCHG = HIGH
FAULT = HIGH
TEMP
V BATT > 2.5V
FULLCHG = HIGH
FAULT = LOW
FAST-CHARGE
TIMEOUT
NOT OK
TEMP
OK
FAST CHARGE
FASTCHG = LOW
FULLCHG = HIGH
V BATT < 0.95 × V BATTR
ONCE PER
SECOND
TEMP
OK
FAULT = HIGH
V BATT = BATTERY
REGULATION VOLTAGE (V BATTR )
ONCE PER
SECOND
FULL CHARGE
TEMP
NOT OK
TEMP
QUAL
TEMP
OK
TEMP
OK
TEMP
NOT OK
FASTCHG = HIGH
FULLCHG = LOW
FAULT = HIGH
I CHARGE < I MIN OR
FULL-CHARGE
TIMEOUT
TOP-OFF
DONE
V BATT < 0.95 × V BATTR
FASTCHG = HIGH
FASTCHG = HIGH
Figure 4. State Diagram
FULLCHG = HIGH
FAULT = HIGH
TOP-OFF
TIMEOUT
FULLCHG = HIGH
FAULT = HIGH
When choosing the current-sense resistor, note that the
voltage drop across this resistor adds to the power
loss, reducing efficiency. Reducing the voltage across
the current-sense resistor may degrade input current
limit accuracy due to the input offset of the input cur-
rent-sense amplifier.
The input current error amplifier (GMS) is compensated
at CCS. A 0.1μF capacitor at CCS provides suitable
performance for most applications.
PWM Controller
The PWM controller drives the internal high-side MOS-
FET to control charging current or voltage. The input to
the PWM controller is the lowest of CCI, CCV, or CCS.
An internal clamp limits the noncontrolling signals to
within 200mV of the controlling signal to prevent delay
when switching between regulation loops.
Maxim Integrated
The current mode PWM controller measures the induc-
tor current to regulate the output voltage or current,
simplifying stabilization of the regulation loops.
Separate compensation of the regulation circuits allows
each to be optimally stabilized. Internal slope compen-
sation is included, ensuring stable operation over a
wide range of duty cycles.
The controller drives an internal N-channel MOSFET
switch to step the input voltage down to the battery
voltage. The high-side MOSFET gate is driven to a volt-
age higher than the input source voltage by a bootstrap
capacitor. This capacitor (between BST and LX) is
charged through a diode from VL when LX is low. An
internal N-channel MOSFET turns on momentarily after
the high-side switch turns off, pulling LX to PGND to
ensure that the bootstrap capacitor charges. The high-
side MOSFET gate is driven from BST, supplying suffi-
13
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相关代理商/技术参数 |
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|---|---|
| MAX1757EVKIT | 功能描述:电池管理 Evaluation Kit for the MAX1757 MAX1758 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17582GTL+ | 制造商:Maxim Integrated Products 功能描述:1.2MHZ LOW-COST HIGH-PERFORMANCE - Rail/Tube |
| MAX17582GTM+ | 功能描述:电流型 PWM 控制器 Dual-Phase Quick-PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX17582GTM+T | 功能描述:电流型 PWM 控制器 Dual-Phase Quick-PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX1758EAI | 功能描述:电池管理 Li+ Battery Charger w/28V Switch RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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