- 您现在的位置：买卖IC网 > PDF目录1839 > MAX1715EEI (Maxim Integrated Products)IC REG CTRLR BUCK PWM 28-QSOP PDF资料下载
参数资料
| 型号： | MAX1715EEI |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/25页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 控制器 |
| 输出数： | 2 |
| 频率 - 最大： | 620kHz |
| 占空比： | 100% |
| 电源电压： | 4.5 V ~ 5.5 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： | 28-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
Ultra-High Efficiency, Dual Step-Down
Controller for Notebook Computers
Standard Application Circuit
The standard application circuit (Figure 1) generates
two low-voltage rails for general-purpose use in note-
book computers (I/O supply, fixed CPU core supply,
DRAM supply). This DC-DC converter steps down a
battery or AC adapter voltage to voltages from 1.0V to
5.5V with high efficiency and accuracy.
See Table 1 for a list of components for common appli-
cations. Table 2 lists component manufacturers.
Detailed Description
The MAX1715 buck controller is designed for low-volt-
age power supplies for notebook computers. Maxim’s
proprietary Quick-PWM pulse-width modulator in the
MAX1715 (Figure 2) is specifically designed for han-
dling fast load steps while maintaining a relatively con-
stant operating frequency and inductor operating point
V DD = 5V
BIAS SUPPLY
over a wide range of input voltages. The Quick-PWM
architecture circumvents the poor load-transient timing
problems of fixed-frequency current-mode PWMs while
also avoiding the problems caused by widely varying
switching frequencies in conventional constant-on-time
and constant-off-time PWM schemes.
+5V Bias Supply (V CC and V DD )
The MAX1715 requires an external +5V bias supply in
addition to the battery. Typically, this +5V bias supply
is the notebook’s 95% efficient +5V system supply.
Keeping the bias supply external to the IC improves
efficiency and eliminates the cost associated with the
+5V linear regulator that would otherwise be needed to
supply the PWM circuit and gate drivers. If stand-alone
capability is needed, the +5V supply can be generated
with an external linear regulator such as the MAX1615.
C9
4.7 μ F
C8
1 μ F
D3
CMPSH-3A
V IN
R1
20 Ω
20
V DD
4
V+
4.5V TO 28V
C11
1 μ F
21
3
12
V CC
ILIM1
ILIM2
ON1
ON2
10
11
ON/OFF
CONTROLS
ON1
MAX1715
C2
C1
25
BST1
BST2
18
OUTPUT1
1.8V
C3
L1
D1
N1
N2
C5
0.1 μ F
26
27
24
DH1
LX1
DL1
DH2
LX2
DL2
17
16
19
C6
0.1 μ F
N3
N4
D2
L2
OUTPUT2
2.5V
C4
5
1
TON
OUT1
PGND
OUT2
22
14
C7
0.22 μ F
9
2
8
REF
FB1
AGND
SKIP
FB2
PGOOD
6
13
7
+5V
100k
POWER-GOOD
INDICATOR
PINS 15, 23, 28 = N.C.
Figure 1. Standard Application Circuit
10
______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1716EEG+ | IC REG CTRLR BUCK PWM CM 24-QSOP |
| MAX1717EEG+ | IC REG CTRLR BUCK PWM CM 24-QSOP |
| MAX1720EUT | IC REG SWITCHD CAP INV ADJ 6TSOP |
| MAX1721EUT-T | IC REG SWITCHED CAP INV SOT23-6 |
| MAX1724EZK50-T | IC REG BST SYNC 5V .15A TSOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1715EEI+ | 功能描述:DC/DC 开关控制器 Dual Step-Down 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 |
| MAX1715EEI+T | 功能描述:DC/DC 开关控制器 Dual Step-Down 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 |
| MAX1715EEI-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 |
| MAX1715EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX1715 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 |
| MAX1716EEG | 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 |
发布紧急采购，3分钟左右您将得到回复。