LTC3873-5 Datasheet, PDF (13/16 Pages) Linear Technology – No RSENSETM Constant Frequency Current Mode Boost/Flyback/SEPIC DC/DC Controller

LTC3873-5
TYPICAL APPLICATIONS
–10V to –15V V_IN, –5V V_OUT Negative-to-Negative (Negative Buck) Converter
J1
GND
J2
–V_IN
–10V TO –15V
C4
10μF
25V
R3
15k
R2
C3 1.2k
4.7nF
1
IPRG
8
SW
LTC3873-5
2
I_TH
7
RUN/SS
3
V_FB = 1.2V
6
V_CC
4
GND
5
NGATE
R1
301Ω
C1
1μF
D1
L1
6.4μH
C2
0.1μF
Q1
R5
10k
C_OUT
100μF
6.3V
s3
R4
4.99k
J3
GND
J4
–V_OUT
–5V
3A
6 54
Q2
BC857
12 3
3873-3 TA05
38735fb
13