NCP1729SN35T1G ON Semiconductor, NCP1729SN35T1G Datasheet - Page 10

• Manufacturer Part Number: NCP1729SN35T1G
• Description: IC INVERTER SWITCHED CAP 6TSOP
• Manufacturer: ON Semiconductor
• Type: Switched Capacitor (Charge Pump), Invertingr

Specifications of NCP1729SN35T1G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: -1.15 ~ -5.5 V, 2.3 ~ 11 V
• Current - Output: 50mA
• Frequency - Switching: 35kHz
• Voltage - Input: 1.15 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-74-6
• Power - Output: 313mW
• Function: Inverting
• Output Voltage: - 5.5 V to - 1.15 V
• Output Current: 100 mA
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 5.5V
• Package Type: TSOP
• Pin Count: 6
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP1729SN35T1GOS; NCP1729SN35T1GOS; NCP1729SN35T1GOSTR

minus the forward voltage drop of each external diode. The performance characteristics for the above converter are shown
below. Note that curves A and C show the circuit performance with economical 1N4148 diodes, while curves B and D are with
lower loss MBRA120E Schottky diodes.
A single device can be used to construct a negative voltage tripler. The output voltage is approximately equal to −3.0 V
−10.0
−12.0
−14.0
−16.0
−2.0
−4.0
−6.0
−8.0
0
0
Figure 25. Tripler Load Regulation, Output
10
A
V
Voltage vs. Output Current
in
I
out
+
, OUTPUT CURRENT
20
B
1
2
3
Capacitors = 3.3 mF
Figure 24. Negative Output Voltage Tripler
30
C
D
OSC
T
A
= 25°C
40
http://onsemi.com
6
5
4
NCP1729
+
50
10
+
+
Curve
A
B
C
D
+
+
V
in
3.0
3.0
5.0
5.0
(V)
+
−V
MBRA120E
MBRA120E
All Diodes
out
1N4148
1N4148
R
out
247
228
198
188
(W)
in