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參數(shù)資料
| 型號(hào)： | GM3326-2.5ST25R |
| 廠商： | American Power Management Inc. |
| 英文描述： | PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| 中文描述： | 脈寬調(diào)制，脈寬調(diào)制/ PFM切換升壓 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 111K |
| 代理商： | GM3326-2.5ST25R |
G
M
3
2
6
4
[
Step-up&down DC/DC Converter]
Set output voltage obtained as a result of the automatic switching operations of the IC regardless of the difference between
input voltage and set output voltage.
The above graph shows that over a wide input voltage range, the efficiency of the GM3326 is more or less constant. In
applications that use either a standard dry 3 cell battery or a cell lithium Ion battery to obtain an output of 3.3V, for example,
the efficiency of GM3326 is again much better. Due to GM3326 does not have a series regulator output, we recommend a
test with samples for use in applications where ripple voltage is a problem.
External Components Selection (Notes)
The performance of the DC/DC converter IC circuit is heavily reliant upon the performance of the surrounding circuitry and
components. In particular, since the V voltage of the Schottky Diode used will have a direct effect upon efficiency, the
F
smaller the diode, the better the efficiency obtainable. (Refer to the graph below)
It is also recommended that a switching MOSFET with a small ON resistance be used. With GM3326, an ON resistance of
500mW or less is recommended.
I
= 10mA
OUT
100mA
200mA
Figure 1. Input Voltage vs. Efficiency
90
85
80
75
70
65
60
55
50
45
40
2
3
4
5
6
7
8
Input Voltage (V)
E
ff
ic
ie
n
c
y
(%
)
85
80
75
70
65
0.2
0.4
E
ff
ic
ie
n
c
y
(%
)
Figure 2. V
= 3.3V, I
= 100mA
OUT
V Voltage (V)
F
V = 2.4V
IN
V = 3.0V
IN
V = 4.5V
IN
Set Output Voltage +0.4V
Step-Up Mode
Step-Down Mode
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PDF描述 |
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| GM3326-2.8ST25R | PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
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| GM3326-3.5ST25R | PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-4.0ST25R | PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GM3326-3.0ST25R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-3.3ST25R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-3.5ST25R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-4.0ST25R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-4.5ST25R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
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