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参数资料
型号： LTC1929IG-PG
厂商： LINEAR TECHNOLOGY CORP
元件分类： 稳压器
英文描述： 3 A DUAL SWITCHING CONTROLLER, 310 kHz SWITCHING FREQ-MAX, PDSO28
封装： 0.209 INCH, PLASTIC, SSOP-28
文件页数： 12/28页
文件大小： 310K
代理商： LTC1929IG-PG
2
LTC1929/LTC1929-PG
ORDER PART
NUMBER
LTC1929CG
LTC1929CG-PG
LTC1929IG
LTC1929IG-PG
ABSOLUTE
AXI U
RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UU
W
TJMAX = 125°C, θJA = 95°C/W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN/SS = 5V unless otherwise noted.
(Note 1)
Input Supply Voltage (VIN).........................36V to –0.3V
Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V
Switch Voltage (SW1, 2) .............................36V to – 5 V
SENSE1+, SENSE2 +, SENSE1–,
SENSE2 – Voltages ........................ (1.1)INTVCC to –0.3V
EAIN, VOS+, VOS–, EXTVCC, INTVCC,
RUN/SS, AMPMD Voltages .......................... 7V to – 0.3V
Boosted Driver Voltage (BOOST-SW) .......... 7V to – 0.3V
PLLFLTR, PLLIN, VDIFFOUT Voltages .... INTVCC to –0.3V
ITH Voltage ................................................2.7V to –0.3V
Peak Output Current <1
s(TGL1,2, BG1,2)................ 3A
INTVCC RMS Output Current ................................ 50mA
Operating Ambient Temperature Range
LTC1929C .................................................. 0
°C to 85°C
LTC1929I .............................................. – 40
°C to 85°C
Junction Temperature (Note 2) ............................. 125
°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loop
VEAIN
Regulated Feedback Voltage
(Note 3); ITH Voltage = 1.2V
q
0.792
0.800
0.808
V
VSENSEMAX
Maximum Current Sense Threshold
VSENSE– = 5V
q
62
75
88
mV
VSENSE1, 2 = 5V, LTC1929 Only
65
75
85
mV
IINEAIN
Feedback Current
(Note 3)
– 5
– 50
nA
VLOADREG
Output Voltage Load Regulation
(Note 3)
Measured in Servo Loop; ITH Voltage = 0.7V
q
0.05
0.5
%
Measured in Servo Loop; ITH Voltage = 2V
q
– 0.1
– 0.5
%
VREFLNREG
Reference Voltage Line Regulation
VIN = 3.6V to 30V (Note 3)
0.002
0.02
%/V
VOVL
Output Overvoltage Threshold
Measured at VEAIN
0.84
0.86
0.88
V
UVLO
Undervoltage Lockout
VIN Ramping Down
3
3.5
4
V
gm
Transconductance Amplifier gm
ITH = 1.2V; Sink/Source 5A; (Note 3)
3
mmho
gmOL
Transconductance Amplifier Gain
ITH = 1.2V; (gmxZL; No Ext Load); (Note 3)
1.5
V/mV
IQ
Input DC Supply Current
(Note 4)
Normal Mode
EXTVCC Tied to VOUT; VOUT = 5V
470
A
Shutdown
VRUN/SS = 0V
20
40
A
IRUN/SS
Soft-Start Charge Current
VRUN/SS = 1.9V
– 0.5
–1.2
A
VRUN/SS
RUN/SS Pin ON Threshold
VRUN/SS Rising
1.0
1.5
1.9
V
VRUN/SSLO
RUN/SS Pin Latchoff Arming
VRUN/SS Rising from 3V
4.1
4.5
V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
*PGOOD ON LTC1929-PG
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RUN/SS
SENSE1+
SENSE1–
EAIN
PLLFLTR
PLLIN
NC
ITH
SGND
VDIFFOUT
VOS–
VOS+
SENSE2–
SENSE2+
NC
TG1
SW1
BOOST1
VIN
BG1
EXTVCC
INTVCC
PGND
BG2
BOOST2
SW2
TG2
AMPMD*
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相关代理商/技术参数
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