LTC1629 LINER [Linear Technology], LTC1629 Datasheet - Page 2

• Manufacturer Part Number: LTC1629
• Description: PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
LTC1629/LTC1629-PG
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (V
Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V
Switch Voltage (SW1, 2) .............................36V to – 5 V
SENSE1
SENSE2
EAIN, V
RUN/SS, AMPMD, PGOOD Voltages ............7V to – 0.3V
Boosted Driver Voltage (BOOST-SW) ..........7V to – 0.3V
PLLFLTR, PLLIN, CLKOUT, PHASMD,
V
I
Peak Output Current <1 s(TGL1,2, BG1,2) ................ 5A
INTV
Operating Ambient Temperature Range
Junction Temperature (Note 2) ............................. 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
temperature range, otherwise specifications are at T
SYMBOL
Main Control Loop
V
V
I
V
V
V
UVLO
g
g
I
I
V
V
I
I
2
INEAIN
Q
RUN/SS
SCL
SDLDO
TH
m
mOL
EAIN
SENSEMAX
LOADREG
REFLNREG
OVL
RUN/SS
RUN/SSLO
LTC1629C/LTC1629C-PG .......................... 0 C to 85 C
LTC1629I/LTC1629I-PG ....................... – 40 C to 85 C
DIFFOUT
Voltage ................................................2.7V to – 0.3V
CC
OS
RMS Output Current ................................ 50mA
+
–
, SENSE2
Voltages ................................ INTV
+
Voltages ........................ (1.1)INTV
PARAMETER
Regulated Feedback Voltage
Maximum Current Sense Threshold
Feedback Current
Output Voltage Load Regulation
Reference Voltage Line Regulation
Output Overvoltage Threshold
Undervoltage Lockout
Transconductance Amplifier g
Transconductance Amplifier Gain
Input DC Supply Current
Soft-Start Charge Current
RUN/SS Pin ON Threshold
RUN/SS Pin Latchoff Arming
RUN/SS Discharge Current
Shutdown Latch Disable Current
, V
Normal Mode
Shutdown
OS
–
, EXTV
W
+
, SENSE1
CC
IN
).........................36V to – 0.3V
, INTV
W W
–
,
CC
m
,
CONDITIONS
(Note 3); I
V
V
(Note 3)
(Note 3)
Measured in Servo Loop; I
Measured in Servo Loop; I
V
Measured at V
V
I
I
(Note 4)
EXTV
V
V
V
V
Soft Short Condition V
V
TH
TH
SENSE
SENSE1, 2
IN
IN
RUN/SS
RUN/SS
RUN/SS
RUN/SS
EAIN
= 1.2V; Sink/Source 5 A; (Note 3)
= 1.2V; (g
U
= 3.6V to 30V (Note 3)
Ramping Down
CC
CC
A
CC
= 0.5V
= 25 C. V
–
to – 0.3V
to – 0.3V
Tied to V
= 0V
= 1.9V
Rising
Rising from 3V
= 5V
TH
= 5V; LTC1629 Only
Voltage = 1.2V
The
m
EAIN
xZ
OUT
L
IN
; No Ext Load); (Note 3)
denotes the specifications which apply over the full operating
= 15V, V
; V
EAIN
OUT
PACKAGE/ORDER I FOR ATIO
Consult factory for Military grade parts.
TH
TH
= 0.5V; V
= 5V
SENSE1
SENSE1
SENSE2
SENSE2
PHASMD
PLLFLTR
V
RUN/SS
Voltage = 0.7V
Voltage = 2V
DIFFOUT
RUN/SS
PLLIN
SGND
V
V
EAIN
OS
OS
I
TH
+
–
–
+
–
+
T
RUN/SS
*PGOOD ON LTC1629-PG
JMAX
28-LEAD PLASTIC SSOP
10
11
12
13
14
1
2
3
4
5
6
7
8
9
= 5V unless otherwise noted.
= 125 C,
G PACKAGE
TOP VIEW
= 4.5V
JA
= 95 C/W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CLKOUT
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
AMPMD*
IN
0.792
– 0.5
0.84
MIN
1.0
0.5
62
65
CC
CC
3
U
0.800
0.002
– 0.1
0.86
– 1.2
TYP
470
0.1
3.5
1.5
1.5
4.1
1.6
– 5
75
75
20
3
2
ORDER PART
LTC1629CG
LTC1629IG
LTC1629CG-PG
LTC1629IG-PG
NUMBER
W
0.808
MAX
– 0.5
– 50
0.02
0.88
0.5
1.9
4.5
88
85
40
4
4
5
UNITS
mmho
V/mV
U
%/V
mV
mV
nA
%
%
V
V
V
A
A
A
V
V
A
A