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參數(shù)資料
| 型號(hào)： | GS-R12VXXX1.5 |
| 英文描述： | 1.8W TO 7.5W STEP DOWN SWITCHING REGULATOR FAMILY |
| 中文描述： | 1.8W的7.5W降壓開關(guān)穩(wěn)壓器家族 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 88K |
| 代理商： | GS-R12VXXX1.5 |
5/8
GS-R12HXXX2
ELECTRICAL CHARACTERISTICS
for GS-R24HXXX only
(T
amb
=25
)
C, unless otherwise specified.)
USER NOTES
Input Voltage
The recommended operating maximum DC Input Voltage is 15V inclusive of ripple voltage.
Reference voltage
No capacitor is required for stability.
Inhibit function
The inhibit feature allows to put in stand-by mode the device.
With INH pin 9 higher than 2.2V the device is disabled and the power consumption is reduced to less than
100
μA.
With INH pin lower than 0.8V, the device is enabled.
If the INH pin is left floating, an internal pull up ensures that the voltage at the pin reaches the inhibit threshold
and the device is disabled.
The pin is also V
cc
compatible.
Multiple units synchronization
Using more than one unit on the same circuit, it is possible to synchronize the switching frequency, connecting
all pin 10 together (see figure 3).
The unit with higher frequency becomes the master.
Current protection
The device has two current limit protections, pulse by pulse and frequency fold back.
The current is sensed through a resistor and if reaches the threshold, the on time is reduced and consequently
the output voltage too.
Since the minimum switch ON time (necessary to avoid false overcurrent signal) is not enough to obtain a suf-
ficiently low duty cycle at 250 Hz, the output current, in strong overcurrent or short circuit conditions, could in-
crease again.
For this reason the switching frequency is also reduced, so keeping the inductor current under its maximum
threshold.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
I
o
Output Current
V
i
=16
÷
35V for GS-R24H0332
---------------------
GS-R24H0502
0
2
A
I
o
Output Current
V
i
=16
÷
35V for GS-R24H1201.5
0
1.5
A
I
o
Output Current
V
i
=16
÷
35V for GS-RH0001
0
1-2
A
V
r
Ripple Voltage
V
i
=24V I
o
= 2A for GS-R24H0332
--------------------- -
GS-R24H0502
20
mVpp
V
r
Ripple Voltage
V
i
=24V I
o
= 2A for GS-R24H1201.5
100
mVpp
V
r
Ripple Voltage
V
i
=24V I
o
= 2A for GS-R24H0001
100-
250
mVpp
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