LTC3613 Datasheet, PDF (29/36 Pages) Linear Technology – 24V, 15A Monolithic Step Down Regulator

LTC3613
APPLICATIONS INFORMATION
PV_IN
INTV_CC
SV_IN
R_PGD
100k
LTC3613
PGOOD
V_OUT
SENSE^–
RUN
SENSE⁺
V_RNG
MODE/PLLIN SW
EXTV_CC
C_SS 0.1μF
BOOST
TRACK/SS
C_ITH2 47pF
C_ITH1 270pF _{RITH 21k}
R_T 115k
ITH
RT
SGND
INTV_CC
PGND
V_OSNS+
V_OSNS–
R_VIN
2.2Ω
C_VIN
0.1μF
R_F2
10Ω
C_F
1000pF
R_F1
10Ω
C_B
0.1μF
D_B
INTV_CC
C_VCC
4.7μF
C_IN2 +
22μF
×2
C_IN1
82μF
25V
V_IN
4.5V TO 24V
L1
0.47μH
R_SENSE
1.5mΩ
R_FB2
15k
R_FB1
10k
C_OUT2
100μF
×2
+
V_OUT
1.5V
15A
C_OUT1
330μF
2.5V
×2
3833 F11
C_IN1: SANYO 25SVPD82M
C_OUT1: SANYO 2R5TPE330M9
D_B: CENTRAL CMDSH-3
L1: COILTRONICS FP1109-R47
Efficiency
100
PULSE-SKIPPING
90
MODE
FORCED
80
CONTINUOUS
MODE
70
60
50
40
0.1
V_IN = 12V
V_OUT = 1.5V
1
10
100
LOAD CURRENT (A)
3613 F11a
Figure 10. 1.5V, 15A, 350kHz High Current Step-Down Converter
3613fa
29