Datasheet

LTC3816
40
3816f
Typical applicaTions
An IMVP-6 Converter Using Current Sense Resistor with –5.7mV/A AVP Slope
+
+
GND
INTV
CC
SGND
LTC3816
I
SENN
I
SENP
LFF
1.1V
VRTT# VRTT#
3.3V
I
MAX
I
TC
33pF
4.75k
3.32k
124Ω
1000pF
CLKEN# CLKEN#
PWRGD
PREI
MON
I
MON
RPTC
VR
ON
V
SS(SEN)
V
CC(SEN)
SERVO
V
FB
SS
VID0 VID1 VID2 VID3 VID4 VID5 VID6
VID0 VID1 VID2 VID3 VID4 VID5 VID6
COMP
VR
ON
DPRSLPVR
CSLEW
DPRSLPVR
4.5V TO 25V
V
IN
C
IN
PTC
0.1µF
1µF
1
8
5
4
2, 3
6, 7
L
R
SEN
C
BULK
330µF
s2
C
CER
10µF
s6
V
CC(CORE)
I
LOAD(MAX)
4A
V
SS(CORE)
D
B
4.7µF
C
BULK
: SANYO POSCAP 2TPF330M6
L: VISHAY IHLP2525CZ-06 (1µH, DCR = 8.44mΩ)
PTC: MURATA PRF18BC471QB1RB
R
SEN
: PANASONIC ERJM1WTF4M0U
f
SYNC
INTV
CC
Si4816BDY
SW
TG
BOOST
V
IN
INTV
CC
BG
BSOURCE
EXTV
CC
RFREQ
MODE/SYNC
56Ω
2.37k
1.9k 1.9k
100Ω
3816 TA02
100Ω
I
TCFB
10pF
1500pF
22pF470pF
22pF
1000pF
10k
20k
LOAD CURRENT (A)
0.01
40
EFFICIENCY (%)
50
60
70
80
0.1 1
3816 TA02b
30
20
10
0
90
100
V
CC(CORE)
= 1V
f
OSC
= 400kHz
V
EXTVCC
= 0V
CONTINUOUS MODE
PULSE-SKIPPING MODE
V
IN
= 5V
V
IN
= 12V
V
CC(CORE)
20mV/DIV
I
LOAD
2A/DIV
20µs/DIV
3816 TA02b
Efficiency Transient Waveform