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TPS60403-Q1
TPS60403-Q1 | |
|---|---|
| Manufacturer Part Number | TPS60403-Q1 |
| Manufacturer | Texas Instruments |
| TPS60403-Q1 datasheets |
|
Availability: In stock
International delivery:
Warranty: 60 days
×
- We provide standard 60-days warranty for all parts. If warranty differs we always mention it beforehand. In case of return we cover shipping costs.
- If you still have any questions - please contact us
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Specifications of TPS60403-Q1 | |||
|---|---|---|---|
| Iout(max)(a) | 0.06 | Iq(typ)(ma) | 0.7 |
| Vin(min)(v) | 1.8 | Vin(max)(v) | 5.25 |
| Vout(min)(v) | -1.8 | Vout(max)(v) | -5.25 |
| Efficiency(typ)(%) | 90 | Switching Frequency(max)(khz) | 325 |
| Topology | Inverting Buck/Boost | Operating Temperature Range(c) | -40 to 125 |
| Pin/package | 5SOT-23 | Regulated Outputs(#) | 1 |
PrevNext
combined doubler/inverter
In the circuit of Figure 27, capacitors C
and C
are the flying capacitors; C
(fly)
use part of the charge-pump circuit, loading either output causes both outputs to decline toward GND. Make
sure the sum of the currents drawn from the two outputs does not exceed 60 mA. The maximum output current at
V
must not exceed 30 mA. If the negative output is loaded, this current must be further reduced.
(pos)
V I
+
GND
Figure 27. TPS60400 as Doubler/Inverter
cascading devices
Two devices can be cascaded to produce an even larger negative voltage (see Figure 28). The unloaded output
voltage is normally −2 × V
, but this is reduced slightly by the output resistance of the first device multiplied by the
I
quiescent current of the second. When cascading more than two devices, the output resistance rises
dramatically.
V I
1 µF
C (fly)
1
OUT
C1+
TPS60400
2
IN
3
C1−
GND
+
C I
1 µF
GND
APPLICATION INFORMATION
, C
, and C
form the inverter, while C1 and C2 form the doubler. C1
I
(fly)
O
and C2 are the output capacitors. Because both the inverter and doubler
O
≈ −I
+ 2 × I
I
I
O
O(POS)
1 µF
C (fly)
+
C 1
1
5
OUT
C1+
+
TPS60400
2
IN
3
4
C1−
GND
C I
C O
1 µF
1 µF
+
1 µF
C (fly)
1
5
OUT
C1+
TPS60400
2
IN
4
3
C1−
GND
C O
+
1 µF
GND
Figure 28. Doubling Inverter
•
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
SGLS246A − JUNE 2004 − REVISED JUNE 2008
D 2
V (pos)
−V I
+
C 2
GND
V O (−2 V I )
5
4
C O
1 µF
+
GND
17
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