参数资料
型号: MAX8715EUA+T
厂商: Maxim Integrated Products
文件页数: 1/14页
文件大小: 0K
描述: IC REG BOOST ADJ 0.8A 8UMAX
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 2.6 V ~ 12 V
输入电压: 2.6 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 640kHz, 1.22MHz
电流 - 输出: 1.8A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-uMAX
19-1563; Rev 3; 9/05
ATION
AILABL
EVALU E
AV
KIT
Low-Noise Step-Up DC-DC Converters
General Description
The MAX1790/MAX8715 boost converters incorporate
high-performance (at 1.2MHz), current-mode, fixed-fre-
quency, pulse-width modulation (PWM) circuitry with a
built-in 0.21 Ω /0.15 Ω n-channel MOSFET to provide a high-
ly efficient regulator with fast response.
High switching frequency (640kHz or 1.2MHz selectable)
allows easy filtering and faster loop performance. An
external compensation pin provides the user flexibility in
determining loop dynamics, allowing the use of small, low
equivalent-series-resistance (ESR) ceramic output capaci-
tors. The device can produce an output voltage as high as
12V from an input as low as 2.6V.
Soft-start is programmed with an external capacitor, which
sets the input-current ramp rate. In shutdown mode, cur-
rent consumption is reduced to 0.1μA. The MAX1790/
MAX8715 are available in a space-saving 8-pin μMAX ?
package. The ultra-small package and high switching fre-
quency allow the total solution to be less than 1.1mm high.
Features
? 90% Efficiency
? Adjustable Output from V IN to 12V
? 1.6A, 0.21 Ω , 14V Power MOSFET (MAX1790)
? 2.4A, 0.15 Ω , 14V Power MOSFET (MAX8715)
? +2.6V to +5.5V Input Range
? Pin-Selectable 640kHz or 1.2MHz Switching
Frequency
? 0.1μA Shutdown Current
? Programmable Soft-Start
? Small 8-Pin μMAX Package
Ordering Information
μMAX is a registered trademark of Maxim Integrated Products,
PART
TEMP RANGE
PIN-PACKAGE
Inc.
LCD Displays
PCMCIA Cards
Applications
MAX1790 EUA
MAX1790EUA+
MAX8715 EUA
MAX8715EUA+
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 μMAX
8 μMAX
8 μMAX
8 μMAX
Portable Applications
Hand-Held Devices
Typical Operating Circuit
+ Denotes lead-free package.
Pin Configuration
V IN
2.6V TO 5V
TOP VIEW
COMP
1
8
SS
ON/OFF
SHDN
IN
LX
V OUT
FB
2
MAX1790
7
FREQ
MAX1790
SHDN
3
MAX8715
6
IN
MAX8715
FREQ
SS
GND
FB
GND 4
μ MAX
5
LX
COMP
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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