TC110 Microchip Technology, TC110 Datasheet - Page 8

• Manufacturer Part Number: TC110
• Description: PFM/PWM Step-Up DC/DC Controller
• Manufacturer: Microchip Technology

TC110
4.0
4.1
Figure 4-1 shows a TC110 operating as a 100kHz
bootstrapped regulator with soft start. This circuit uses
an NPN switching transistor (Zetex FZT690B) that has
an h
high beta transistors can be used, but the values of R
and C
different from that of the FZT690B.
TABLE 4-1:
DS21355B-page 8
Surface Mount
Through-Hole
FE
B
of 400 and V
Type
may need adjustment if h
APPLICATIONS
Circuit Examples
SUGGESTED COMPONENTS AND SUPPLIERS
CESAT
Sumida
CD54 Series (300kHz)
CD75 (100kHz)
Coiltronics
CTX Series
Sumida
RCH855 Series
RCH110 Series
Renco
RL1284-12
of 100 mV at I
Inductors
FE
is significantly
C
= 1A. Other
Matsuo
267 Series
Sprague
595D Series
Nichicon
F93 Series
Sanyo
OS-CON Series
Nichicon
PL Series
B
Capacitors
Figure 4-2 and Figure 4-3 both utilize an N-channel
switching transistor (Silconix Si9410DY). This transistor
is a member of the Littlefoot
MOSFETs. The circuit of Figure 4-2 operates in
bootstrapped mode, while the circuit of Figure 4-3
operates in non-bootstrapped mode.
Nihon
EC10 Series
Matsushita
MA735 Series
ON Semiconductor
1N5817 - 1N5822
Diodes
©
2002 Microchip Technology Inc.
TM
N-channel
Silconix
Si9410DY
ON Semiconductor
MTP3055EL
MTD20N03
NPN
Zetex
ZTX694B
family of small outline
Transistors