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参数资料
| 型号： | MAX1715EEI |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/25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
Table 1. Component Selection for Standard Applications
COMPONENT
Input Range
Frequency
2.5V at 4A
7V to 20V
255kHz
1.8V at 4A
7V to 20V
345kHz
5V at 3A
7V to 20V
255kHz
1.3V at 8A
7V to 20V
255kHz
3.3V at 1.5A
4.75V to 5.5V
600kHz
Fairchild
Q1 High-Side MOSFET Semiconductor
1/2 FDS6982A
Fairchild
Q2 Low-Side MOSFET Semiconductor
1/2 FDS6982A
Fairchild
Semiconductor
1/2 FDS6982A
Fairchild
Semiconductor
1/2 FDS6982A
Fairchild
Semiconductor
1/2 FDS6990A
Fairchild
Semiconductor
1/2 FDS6990A
International
Rectifier IRF7811
Fairchild
Semiconductor
FDS6670A
International Rectifier
1/2 IRF7301
International Rectifier
1/2 IRF7301
D2 Rectifier
L1 Inductor
C1 Input Capacitor
Nihon EP10QY03
4.4μH
Sumida CDRH125
10μF, 25V
Taiyo Yuden
TMK432BJ106KM
Nihon EP10QY03
3.1μH
Sumida CDRH125
10μF, 25V
Taiyo Yuden
TMK432BJ106KM
Nihon EP10QY03
6.8μH
Coiltronics UP2B
10μF, 25V
Taiyo Yuden
TMK432BJ106KM
Motorola
MBRS340T3
1.5μH Sumida
CEP125-1R5MC
(2) 10μF, 25V
Taiyo Yuden
TMK432BJ106KM
—
3.3μH
TOKO D73LC
100μF, 10V
Sanyo POSCAP
10TPA100M
C2 Output Capacitor
470μF, 4V Sanyo 470μF, 4V Sanyo
POSCAP 4TPB470M POSCAP 4TPB470M
330μF, 6V AVX
TPSV337M006R
0060
(2) 470μF, 6V Kemet 100μF, 10V
T510X477108M0 Sanyo POSCAP
06AS 10TPA100M
Table 2. Component Suppliers
MANUFACTURER
AVX
Central Semiconductor
Coilcraft
Coiltronics
Fairchild Semiconductor
International Rectifier
Kemet
Matsuo
Motorola
Murata
NIEC (Nihon)
Sanyo
Siliconix
Sprague
Sumida
Taiyo Yuden
TDK
TOKO
*Distributor
USA PHONE
803-946-0690
516-435-1110
847-639-6400
561-241-7876
408-822-2181
310-322-3331
408-986-0424
714-969-2491
602-303-5454
814-237-1431
800-831-9172
805-867-2555*
619-661-6835
408-988-8000
800-554-5565
603-224-1961
847-956-0666
408-573-4150
847-390-4461
800-PIK-TOKO
FACTORY FAX
[Country Code]
[1] 803-626-3123
[1] 516-435-1824
[1] 847-639-1469
[1] 561-241-9339
[1] 408-721-1635
[1] 310-322-3332
[1] 408-986-1442
[1] 714-960-6492
[1] 602-994-6430
[1] 814-238-0490
[81] 3-3494-7414
[81] 7-2070-1174
[1] 408-970-3950
[1] 603-224-1430
[81] 3-3607-5144
[1] 408-573-4159
[1] 847-390-4405
[1] 708-699-1194
The power input and +5V bias inputs can be connected
together if the input source is a fixed +4.5V to +5.5V
supply. If the +5V bias supply is powered up prior to
the battery supply, the enable signal (ON1, ON2) must
be delayed until the battery voltage is present to ensure
start-up. The +5V bias supply must provide V CC and
gate-drive power, so the maximum current drawn is:
I BIAS = I CC + f (QG1 + QG2) = 5mA to 30mA (typ)
where ICC is 1mA typical, f is the switching frequency,
and QG1 and QG2 are the MOSFET data sheet total
gate-charge specification limits at V GS = 5V.
Free-Running, Constant-On-Time PWM
Controller with Input Feed-Forward
The Quick-PWM control architecture is a pseudo-fixed-
frequency, constant-on-time current-mode type with
voltage feed-forward (Figure 3). This architecture relies
on the output filter capacitor’s ESR to act as the cur-
rent-sense resistor, so the output ripple voltage pro-
vides the PWM ramp signal. The control algorithm is
simple: the high-side switch on-time is determined sole-
ly by a one-shot whose period is inversely proportional
to input voltage and directly proportional to output volt-
age. Another one-shot sets a minimum off-time (400ns
typ). The on-time one-shot is triggered if the error com-
parator is low, the low-side switch current is below the
______________________________________________________________________________________
11
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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 |
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