ltc1876eg-trpbf Linear Technology Corporation, ltc1876eg-trpbf Datasheet - Page 2

• Manufacturer Part Number: ltc1876eg-trpbf
• Description: High Efficiency, 2-phase, Dual Synchronous Step-down Switching Controller And Step-up Regulator
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
LTC1876
(Note 1)
Input Supply Voltage (V
Topside Driver Voltages
(BOOST1, BOOST2) ................................... 42V to –0.3V
Switch Voltage (SW1, SW2) ......................... 36V to –5V
INTV
(BOOST1-SW1), (BOOST2-SW2), ...............7V to – 0.3V
SENSE1
FREQSET, STBYMD, FCB, PGOOD
I
Peak Output Current <10 s (TG1, TG2, BG1, BG2) ... 3A
INTV
AUXV
AUXSD ..................................................................... 10V
AUXSW ..................................................... 36V to –0.3V
AUXV
Current into AUXV
Operating Temperature Range (Note 2) ...–40 C to 85 C
Junction Temperature (Note 3) ............................. 125 C
Storage Temperature Range ..................–65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
SYMBOL
Main Control Loops
V
I
V
V
g
g
I
V
I
V
2
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
TH1,
VOSENSE1, 2
Q
FCB
m1, 2
mOL1, 2
OSENSE1, 2
REFLNREG
LOADREG
FCB
BINHIBIT
Voltages ................................... (1.1)INTV
Voltages ..................................................7V to – 0.3V
CC,
CC
I
TH2
IN ..................................................................
FB
Peak Output Current ................................ 50mA
EXTV
+
Voltage ....................................... 2.5V to –0.3V
, V
, SENSE2
OSENSE1
PARAMETER
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
Transconductance Amplifier g
Transconductance Amplifier GBW
Input DC Supply Current
Forced Continuous Threshold
Forced Continuous Current
Burst Inhibit (Constant Frequency)
Threshold
Normal Mode
Standby
Shutdown
CC
, RUN/SS1, RUN/SS2, PGOOD,
W
FB .......................................................
+
, V
, SENSE1
OSENSE2
IN
)......................... 36V to –0.3V
W W
–
, SENSE2
Voltages ... 2.7V to –0.3V
m
–
CONDITIONS
I
(Note 4)
V
(Note 4)
Measured in Servo Loop; I
Measured in Servo Loop; I
I
I
(Note 5)
V
V
V
V
Measured at FCB pin
TH1, 2
TH1, 2
TH1, 2
IN
IN
RUN/SS1, 2
RUN/SS1, 2
FCB
16V to –0.3V
= 15V; EXTV
= 3.6V to 30V (Note 4)
U
CC
= 0.85V
A
Voltage = 1.2V (Note 4)
= 1.2V; Sink/Source 5 A; (Note 4)
= 1.2V; (Note 4)
= 25 C. V
to – 0.3V
= 0V, V
= 0V, V
The denotes the specifications which apply over the full operating
1mA
CC
STBYMD
STBYMD
IN
Tied to V
= 15V, V
PACKAGE/ORDER I FOR ATIO
Consult factory for parts specified with wider operating temperature ranges.
> 2V
= Open
AUXSGND
TH
TH
OUT1
V
V
RUN/SS1
FREQSET
SENSE1
SENSE1
SENSE2
SENSE2
STBYMD
OSENSE1
3.3V
OSENSE2
AUXV
AUXSW
AUXSW
Voltage = 1.2V to 0.7V
Voltage = 1.2V to 2V
SGND
RUN/SS1, 2
I
; V
I
FCB
ITH2
OUT
TH1
FB
OUT1
+
–
–
+
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
T
JMAX
= 5V
36-LEAD PLASTIC SSOP
= 5V, AUXV
= 125 C,
G PACKAGE
TOP VIEW
JA
= 95 C/W
IN
= 3V unless otherwise noted.
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
0.792
–0.3
0.76
MIN
PGOOD
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
RUN/SS2
AUXSD
AUXV
AUXPGND
AUXPGND
IN
U
CC
CC
IN
–0.18
0.800
0.002
0.800
–0.1
TYP
350
125
0.1
1.3
4.3
–5
20
3
ORDER PART
W
LTC1876EG
NUMBER
0.808
MAX
0.02
–0.5
0.84
–0.1
–50
0.5
4.8
35
UNITS
mmho
1876fa
U
MHz
%/V
nA
%
%
V
A
A
A
V
A
V