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LTC1929-PG डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Synchronous Step-Down Switching Regulators - Linear

भाग संख्या LTC1929-PG
समारोह Synchronous Step-Down Switching Regulators
मैन्युफैक्चरर्स Linear 
लोगो Linear लोगो 
पूर्व दर्शन
1 Page
		
<?=LTC1929-PG?> डेटा पत्रक पीडीएफ

LTC1929-PG pdf
LTC1929/LTC1929-PG
ABSOLUTE AXI U RATI GS
(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 <1µs(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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
RUN/SS
SENSE1+
SENSE1
1
2
3
EAIN 4
PLLFLTR 5
PLLIN 6
NC 7
ITH 8
SGND 9
VDIFFOUT 10
VOS– 11
VOS+ 12
SENSE213
SENSE2+ 14
28 NC
27 TG1
26 SW1
25 BOOST1
24 VIN
23 BG1
22 EXTVCC
21 INTVCC
20 PGND
19 BG2
18 BOOST2
17 SW2
16 TG2
15 AMPMD*
G PACKAGE
28-LEAD PLASTIC SSOP
*PGOOD ON LTC1929-PG
TJMAX = 125°C, θJA = 95°C/W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LTC1929CG
LTC1929CG-PG
LTC1929IG
LTC1929IG-PG
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.
SYMBOL
PARAMETER
Main Control Loop
VEAIN
VSENSEMAX
Regulated Feedback Voltage
Maximum Current Sense Threshold
IINEAIN
VLOADREG
Feedback Current
Output Voltage Load Regulation
VREFLNREG
VOVL
UVLO
gm
gmOL
IQ
IRUN/SS
VRUN/SS
VRUN/SSLO
Reference Voltage Line Regulation
Output Overvoltage Threshold
Undervoltage Lockout
Transconductance Amplifier gm
Transconductance Amplifier Gain
Input DC Supply Current
Normal Mode
Shutdown
Soft-Start Charge Current
RUN/SS Pin ON Threshold
RUN/SS Pin Latchoff Arming
CONDITIONS
(Note 3); ITH Voltage = 1.2V
VSENSE = 5V
VSENSE1, 2 = 5V, LTC1929 Only
(Note 3)
(Note 3)
Measured in Servo Loop; ITH Voltage = 0.7V
Measured in Servo Loop; ITH Voltage = 2V
VIN = 3.6V to 30V (Note 3)
Measured at VEAIN
VIN Ramping Down
ITH = 1.2V; Sink/Source 5µA; (Note 3)
ITH = 1.2V; (gmxZL; No Ext Load); (Note 3)
(Note 4)
EXTVCC Tied to VOUT; VOUT = 5V
VRUN/SS = 0V
VRUN/SS = 1.9V
VRUN/SS Rising
VRUN/SS Rising from 3V
MIN TYP MAX UNITS
q 0.792
q 62
65
0.800
75
75
–5
0.808
88
85
– 50
V
mV
mV
nA
q
0.05 0.5
%
q
– 0.1 – 0.5
%
0.002 0.02
%/V
0.84 0.86 0.88
V
3 3.5 4
V
3 mmho
1.5 V/mV
470
20
– 0.5 –1.2
1.0 1.5
4.1
40
1.9
4.5
µA
µA
µA
V
V
2

विन्यास 28 पेज
डाउनलोड[ LTC1929-PG Datasheet.PDF ]


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