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參數(shù)資料
| 型號： | HA16116 |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關穩(wěn)壓器 |
| 文件頁數(shù)： | 19/34頁 |
| 文件大小： | 250K |
| 代理商： | HA16116 |
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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
相關PDF資料 |
PDF描述 |
|---|---|
| HA16121FP | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| HA16116FP | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| HA16116FPJ | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| HA16129FPJ | Single Watchdog Timer |
| HA16129 | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA16116FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Switching Regulator for Chopper Type DC/DC Converter |
| 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 |
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