LM2681M6X National Semiconductor, LM2681M6X Datasheet - Page 7

• Manufacturer Part Number: LM2681M6X
• Description: IC CONVERTER SWITCH CAP SOT23-6
• Manufacturer: National Semiconductor
• Type: Switched Capacitor (Charge Pump), Divider, Doublerr

Specifications of LM2681M6X

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.8 ~ 11 V
• Current - Output: 20mA
• Frequency - Switching: 80kHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Power - Output: 600mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LM2681M6XTR

Other Applications
REGULATING V
It is possible to regulate the output of the LM2681 by use of
a low dropout regulator (such as LP2980-5.0). The whole
converter is depicted in Figure 5.
A different output voltage is possible by use of LP2980-3.3,
LP2980-3.0, or LP2980-adj.
OUT
FIGURE 5. Generate a Regulated +5V from +3V Input Voltage
FIGURE 4. Increasing Output Voltage by Cascading Devices
(Continued)
7
Note that, the following conditions must be satisfied simulta-
neously for worst case design:
2V
2V
in_max
in_min
>
<
V
V
out_min
out_max
+V
+V
_max
_min
drop_max
drop_min
(LM2681)
(LM2681)
(LP2980) + I
(LP2980) + I
10096521
out_max
out_min
10096520
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x R
x R
out -
out -