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參數資料
| 型號： | HA16116FP |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | FPGA |
| 英文描述： | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| 中文描述： | 開關穩(wěn)壓器的斬波式直流/直流轉換器 |
| 文件頁數： | 19/34頁 |
| 文件大?。?/td> | 250K |
| 代理商： | HA16116FP |
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HA16116FP/FPJ, HA16121FP/FPJ
19
7.2 Adjusting UVL Voltage (when intermittent operation is not used)
The UVL voltage setting in this IC series can be adjusted externally as shown below.
Using the relationships shown in the figure, the UVL voltage in relation to V
IN
can be adjusted by changing
the relative values of V
TH
and V
TL
.
When the IC is operating, transistor Q
4
is off, so V
ON
= 3V
BE
≈
2.1 V. Accordingly, by connecting resistors
R
C
and R
D
, the voltage at which UVL is cancelled is as follows.
V
IN
= 2.1 V
R
C
+ R
D
R
D
×
This V
IN
is simply the supply voltage at which the UVL stops functioning, so in this state Vref is still below
2.5 V. In order to restore Vref to 2.5 V, a V
IN
of approximately 4.3 V should be applied.
With this IC series, V
ON/
OFF
makes use of the V
BE
of internal transistors, so when designing a power supply
system it should be noted that V
ON
has a temperature dependency of around –6 mV/°C.
R
C
R
D
TIM
(open)
ON/OFF
GND
50 k
P.V
IN
S.V
IN
V
IN
Q
1
Q
2
Q
3
Q
4
Vref output
Vref
generation
circuit
To other circuitry
To latch
Vref
3
2
1
00
1
2
V
ON/OFF
3
4
5
V
1.4 V
OFF
V
2.1 V
ON
2.5 V
V 4.5 V
To output
stage
On/off hysteresis circuit
Figure 7.2 Adjusting UVL Voltage
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|---|---|
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| HA16129 | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| HA16129AFPJ | Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp. |
| HA16138 | AC/DC Switching Converter Controller IC With High-Voltage Power MOS FET |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HA16116FP/FPJ/ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HA16116FP/FPJ/ HA16121FP/FPJ Datasheet 443K/SEP.18.03 |
| HA16116FP-E | 制造商:Renesas Electronics 功能描述:DC DC Cntrlr Dual-OUT PWM DC to DC Controller/Step Down 20-Pin SOP Bulk |
| HA16116FPJ | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Switching Regulator for Chopper Type DC/DC Converter |
| HA16117 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS Watchdog Timer |
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