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参数资料
| 型号： | MAX1759EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG 0.1A 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压），切换电容（充电泵） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，2.5 V ~ 5.5 V |
| 输入电压： | 1.6 V ~ 5.5 V |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 100mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-µMAX |
Buck/Boost Regulating
Charge Pump in μMAX
Capacitor Selection
Optimize the charge-pump circuit for physical size, out-
put current, and output ripple by selecting capacitors
0.33 μ F
C IN , C X , and C OUT . See Table 1 for suggested capacitor
values.
Note that capacitors must have low ESR ( ≤ 20m ? ) to
maintain low output ripple. Ceramic capacitors are
recommended. In cost-sensitive applications where high
output current is needed, the output capacitor may be a
V IN = 1.6V TO 5.5V
10 μ F
IN
CXN
MAX1759
CXP
OUT
10 μ F
V OUT = 2.5V
100k
combination of a 1μF ceramic in parallel with a 10μF tan-
talum capacitor. The ceramic capacitor’s low ESR will
help keep output ripple within acceptable levels.
POK
R1
Output Voltage Ripple
The MAX1759 proprietary control scheme automatically
chooses between voltage doubling and voltage step-
down to maintain output voltage regulation over various
SHDN
GND
PGND
FB
76.8k
R2
75k
load currents and V IN to V OUT voltage differentials.
When V IN is lower than V OUT , the charge pump always
operates in voltage-doubler mode. It regulates the output
voltage by modulating the charge delivered by the
transfer capacitor.
When V IN is higher than V OUT , the charge pump oper-
Figure 3. Using External Feedback for Regulated 2.5V Output
Table 1. Capacitor Selection
ates in voltage step-down mode, but may revert to volt-
age-doubler mode if necessary to maintain regulation
under load. While operating in step-down mode, the
output voltage ripple is typically much lower than it is in
voltage-doubler mode (see Typical Operating
Characteristics ).
OUTPUT
CURRENT
(mA)
100
CAPACITOR VALUE
C IN C X C OUT
(μF) (μF) (μF)
10 0.33 10
OUTPUT RIPPLE
(mV)
V IN = V IN =
2.5V 4.2V
40 20
100
4.7
0.22
4.7
80
60
Output Current
The MAX1759 is guaranteed to deliver a regulated 3.3V
50
2.2
0.1
2.2
100
80
at 100mA continuous, from a +2.5V input. Peaks up to
200mA are acceptable as long as the current is
≤ 100mA (RMS).
Applications Information
PC Board Layout
The MAX1759 is a high-frequency switched-capacitor
voltage regulator. For best circuit performance, use a
ground plane and keep C IN , C X , C OUT , and feedback
resistors (if used) close to the device. If using external
feedback, keep the feedback node as small as possi-
ble by positioning the feedback resistors very close to
FB. Suggested PC component placement and board
layout are shown in Figures 4a and 4b.
Chip Information
TRANSISTOR COUNT: 1802
8
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| MAX17600ASA+ | 功能描述:功率驱动器IC Dual MOSFET Drivers RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX17600ASA+T | 功能描述:功率驱动器IC Dual MOSFET Drivers RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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| MAX17600AUA+ | 功能描述:功率驱动器IC Dual MOSFET Drivers RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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