LTC1929 LINER [Linear Technology], LTC1929 Datasheet - Page 3

• Manufacturer Part Number: LTC1929
• Description: 2-Phase, High Efficiency, Synchronous Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
I
I
DF
TG1, 2 t
TG1, 2 t
BG1, 2 t
BG1, 2 t
TG/BG t
BG/TG t
Internal V
V
V
V
V
V
Oscillator and Phase-Locked Loop
f
f
f
R
I
R
Differential Amplifier/Op Amp Gain Block (Note 5)
A
CMRR
R
V
I
A
V
CMRR
PSRR
I
V
GBW
SR
SDLHO
SENSE
NOM
LOW
HIGH
PLLFLTR
B
CL
INTVCC
LDO
LDO
EXTVCC
LDOHYS
DA
OS
OL
CM
O(MAX)
PLLIN
RELPHS
IN
MAX
INT
EXT
OA
DA
OA
1D
2D
r
f
r
f
CC
Regulator
PARAMETER
Shutdown Latch Disable Current
Total Sense Pins Source Current
Maximum Duty Factor
Top Gate Transition Time:
Rise Time
Fall Time
Bottom Gate Transition Time:
Rise Time
Fall Time
Top Gate Off to Bottom Gate On Delay
Synchronous Switch-On Delay Time
Bottom Gate Off to Top Gate On Delay
Top Switch-On Delay Time
Internal V
INTV
EXTV
EXTV
EXTV
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Controller 2-Controller 1 Phase
Gain
Common Mode Rejection Ratio
Input Resistance
Input Offset Voltage
Input Bias Current
Open Loop DC Gain
Common Mode Input Voltage Range
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Maximum Output Current
Maximum Output Voltage
Gain-Bandwidth Product
Slew Rate
Sinking Capability
Sourcing Capability
CC
CC
CC
CC
Load Regulation
Voltage Drop
Switchover Voltage
Switchover Hysteresis
CC
Voltage
CONDITIONS
V
Each Channel: V
In Dropout
C
C
C
C
C
C
6V < V
I
I
I
I
V
V
V
f
f
Differential Amp Mode
Differential Amp Mode; 0V < V
Differential Amp Mode; Measured at V
Op Amp Mode; V
I
Op Amp Mode
Op Amp Mode; 0.7V V
Op Amp Mode
Op Amp Mode; 0V < V
Op Amp Mode; 6V < V
Op Amp Mode; V
Op Amp Mode; I
Op Amp Mode; I
Op Amp Mode; R
CC
CC
CC
CC
PLLIN
PLLIN
DIFFOUT
EAIN
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
PLLFLTR
PLLFLTR
PLLFLTR
A
= 25 C. V
= 0 to 20mA; V
= 20mA; V
= 20mA, EXTV
= 20mA, EXTV
= 0.5V
< f
> f
= 3300pF
= 3300pF
= 3300pF
= 3300pF
= 3300pF Each Driver
= 3300pF Each Driver
IN
= 1mA
OSC
OSC
< 30V; V
= 1.2V
= 0V
The
2.4V
EXTVCC
IN
SENSE1
DIFFOUT
DIFFOUT
denotes the specifications which apply over the full operating
CM
DIFFOUT
= 15V, V
L
EXTVCC
CC
CC
EXTVCC
= 2k
= 2.5V; V
Ramping Positive
Ramping Negative
= 5V
CM
IN
–
, 2
= 1mA
= 1mA
DIFFOUT
= 4V
< 30V
= 0V
< 3V
= 4V
– = V
RUN/SS
DIFFOUT
CM
SENSE1
< 10V
< 5V
= 5V unless otherwise noted.
= 5V;
+
OS
, 2
+ Input
+ = 0V
0.995
MIN
200
110
270
4.8
4.5
98
46
70
70
10
10
0
5000
99.5
TYP
– 60
– 15
120
220
140
310
180
1.6
5.0
0.2
4.7
0.2
30
40
30
20
90
90
50
55
80
30
90
90
35
11
1
2
5
15
LTC1929
1.005
MAX
240
250
170
350
200
5.2
1.0
90
90
90
90
5
6
3
UNITS
V/mV
3
MHz
V/ s
Deg
kHz
kHz
kHz
V/V
mV
mV
mA
k
k
dB
nA
dB
dB
ns
ns
ns
ns
ns
ns
%
%
A
A
V
V
V
A
A
V
V