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参数资料
| 型号： | MAX1761EEE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/23页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 428kHz |
| 电源电压： | 4.5 V ~ 20 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
Small, Dual, High-Efficiency
Buck Controller for Notebooks
V+
1
LX1
S
D
D
G
DL1
P-CHANNEL
N-CHANNEL
DH1
G
D
D
S
S
D
D
G
DL2
P-CHANNEL
N-CHANNEL
DH2
G
D
LX2
D
S
1
Figure 8. Dual N- and P-Channel MOSFET Design
where I LIMIT(MAX) is the maximum valley current
LX1
allowed by the current-limit circuit, including threshold
tolerance and on-resistance variation. This means that
D
G
DL1
the MOSFETs must be very well heatsinked. If short-cir-
cuit protection without overload protection is enough, a
D
N-CHANNEL
S
normal I LOAD value can be used for calculating compo-
nent stresses.
V+
1
S
P-CHANNEL
D
D
D
S
S
1
Choose a Schottky diode (D1, Figure 2) having a for-
ward voltage low enough to prevent the Q2 MOSFET
body diode from turning on during the dead time. As a
DH1
G
D
general rule, a diode having a DC current rating equal
to 1/3 of the load current is sufficient. This diode is
S
D
D
G
DL2
optional and can be removed if efficiency isn ’ t critical.
DH2
G
P-CHANNEL
D
D
S
Applications Issues
D
N-CHANNEL
S
Dropout Performance
The output voltage adjust range for continuous-conduc-
LX2
D
S
1
tion operation is restricted by the nonadjustable 500ns
(max) minimum off-time one-shot. For best dropout per-
formance, use the side with the lower switching fre-
quency, FB2 (250kHz). When working with low input
Figure 9. Two Single N-Channel MOSFETs and a Dual P-Channel
MOSFET Design
voltages, the duty-factor limit must be calculated using
worst-case values for on- and off-times. Manufacturing
V+
1
LX1
V+ 1
LX2
S
S
D
D
D
D
G
S
DL1
S
S
D
D
D
D
G
S
DL2
P-CHANNEL
N-CHANNEL
P-CHANNEL
N-CHANNEL
S
D
D
S
S
D
D
S
DH1
G
D
D
S
DH2
G
D
D
S
1
Figure 10. Two Single N-Channel MOSFETs and Two Single P-Channel MOSFETs Design
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1761EEE+ | 功能描述:DC/DC 开关控制器 Dual Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1761EEE+T | 功能描述:DC/DC 开关控制器 Dual Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1761EEE-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1761EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX1761 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1762EUB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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