LTC1922EG-1 Linear Technology, LTC1922EG-1 Datasheet - Page 2

• Manufacturer Part Number: LTC1922EG-1
• Description: IC CTRLR PWM SYNC 20SSOP
• Manufacturer: Linear Technology

Specifications of LTC1922EG-1

• Pwm Type: Voltage/Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 99%
• Buck: No
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Supply: -

ABSOLUTE AXI U RATI GS
LTC1922-1
(Note 1)
V
All Other Pins to GND
V
V
Outputs (A, B, C, D, E, F) Current ..................... 100mA
Operating Temperature Range (Note 5)
Storage Temperature Range ................. – 65 C to 125 C
Lead Temperature (Soldering, 10 sec).................. 300 C
temperature range, otherwise specifications are at V
SYMBOL
Input Supply
UVLO
UVHY
I
I
V
R
Delay Blocks
DTHR
DHYS
DTMO
DZRT
Phase Modulator
ROS
I
I
DCMX
DCMN
2
ELECTRICAL CHARACTERISTICS
CCST
CCRN
RMP
SLP
SHUNT
SHUNT
CC
CC
REF
Low Impedance Source ......................... –0.3V to 10V
(Chip Self Regulates at 10.3V)
(Low Impedance Source) ..................... –0.3V to 5.5V
LTC1922E ........................................... – 40 C to 85 C
LTC1922I ............................................ – 40 C to 85 C
(Current Fed) .................................................. 25mA
to GND
Output Current ................................ Self Regulated
PARAMETER
Undervoltage Lockout
UVLO Hysteresis
Start-Up Current
Operating Current
Shunt Regulator Voltage
Shunt Resistance
Delay Pin Threshold
ADLY and PDLY
Delay Hysteresis Current
ADLY and PDLY
Delay Time-Out
Zero Delay Threshold
RAMP Offset Voltage
RAMP Discharge Current
Slope Compensation Current
Maximum Phase Shift
Minimum Phase Shift
W
W W
U
CC
= 9.5V, C
SBUS = 1.5V
SBUS = 2.25V
CONDITIONS
Measured on V
Measured on V
V
Current Into V
Current Into V
SBUS = 1.5V, ADLY/PDLY = 1.6V
SBUS = 1.5V
SBUS = 2.25V
Measured on SBUS
Measured on COMP, RAMP = 0V
RAMP = 1V, COMP = 0V
Measured on CS, C
COMP = 4V
COMP = 0V
CC
The denotes the specifications which apply over the full operating
= V
UVLO
T
= 180pF, T
– 0.3V
CC
CC
CC
CC
PACKAGE/ORDER I FOR ATIO
Consult factory for parts specified with wider operating temperature ranges.
= 10mA
= 7mA to 17mA
C
T
T
20-LEAD PLASTIC SSOP
= 1.5V
= 3V
RAMP
COMP
SYNC
PDLY
SBUS
ADLY
R
A
G PACKAGE
LEB
CS
SS
FB
T
= T
T
JMAX
JMAX
10
MIN
1
2
3
4
5
6
7
8
9
= 125 C,
= 125 C,
to T
TOP VIEW
MAX
JA
JA
= 110 C/W (G)
= 62 C/W (N)
unless other wise noted.
20-LEAD PDIP
N PACKAGE
20
19
18
17
16
15
14
13
12
11
C
GND
OUTA
OUTB
OUTC
V
OUTD
OUTE
OUTF
V
T
CC
REF
1.38
2.08
MIN
3.8
1.1
30
35
70
95
3
U
10.25
10.2
–1.5
1.50
2.25
4.15
99.5
TYP
145
600
900
110
4.2
1.3
0.4
0.1
50
55
4
LTC1922EG-1
LTC1922IG-1
LTC1922EN-1
LTC1922IN-1
ORDER PART
W
NUMBER
MAX
10.7
10.8
1.62
2.42
1.45
250
150
0.6
75
7
2
5
UNITS
U
mA
mA
mA
ns
ns
%
%
V
V
A
V
V
V
V
V
A
A