LTC1923 LINER [Linear Technology], LTC1923 Datasheet - Page 3

• Manufacturer Part Number: LTC1923
• Description: High Efficiency Thermoelectric Cooler Controller
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
The
V
SYMBOL PARAMETER
Reference
V
V
LDREG
LINEREG Line Regulation
V
Oscillator and Phase-Locked Loop
f
f
OSCPK
OSCVLY
C
C
PLLGAIN Gain from PLLLPF to R
I
MSTTH
SDDLY
Error Amplifier
V
AOL
V
I
V
V
I
I
GBW
Current Sense Amplifier
ACS
CSOFF
I
I
f3dB
I
I
SSI
SSI
I
OSCI
OSC
PLLLPF
IB
SOURCE
SINK
TECH
TECL
LIMTH
LIMDLY
LIM
REF
REFGD
REFISC
TICH
TIDIS
OS
CM
OH
OL
DD
CHG
LIM
= 5V, R
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
Reference Output Voltage
V
Load Regulation
Short-Circuit Current
Initial Oscillator Frequency
Frequency Variation
C
C
C
C
Phase Detector Output Current
Master Threshold On PLLLPF Pin
Shutdown Delay to Output
Input Offset Voltage
Open-Loop Gain
Common Mode Input Range
FB and CNTRL Input Bias Currents
Output High
Output Low
Sourcing Current
Sinking Current
Gain-Bandwidth Product
Amplifier Gain
Amplifier Offset
Output Sourcing Load Regulation
Output Sinking Load Regulation
–3dB Frequency
Current Limit Threshold
Current Limit Delay to Output
Soft-Start Charge Current
Soft-Start Current Limit Threshold
I
LIM
REF
T
T
T
T
SLEW
Sinking
Sourcing
Ramp Peak
Ramp Valley
Charge Current
Discharge Current
Current Limit Threshold
Good Threshold
= V
DD
, SDSYNC = V
T
DD
, R
T
= 10k, C
CONDITIONS
No Load
V
I
V
V
R
V
C
C
f
f
Measured at SDSYNC Pin
EAOUT = 1V, V
EAOUT = 0.45V to 1.55V, CNTRL = 2.5V
EAOUT = 1V
FB = CNTRL = 1.25
I
I
EAOUT = 1V, FB = 2.4V, CNTRL = 2.5V
EAOUT = 1V, FB = 5V, CNTRL = 2.5V
f = 100kHz (Note 3)
Measured at I
CS
CS
(Note 3)
Measured at CS
SS = 0.75V
SS = 0.5V, Measured at CS
I
LOAD
SYNC
SYNC
LOAD
LOAD
LIM
REF
DD
REF
DD
T
T
T
T
= 0.3V, R
= 1.8V, R
+
+
= 10k, C
= 330pF unless otherwise noted.
= 2.7V to 5.5V
= 2.7V to 5V, C
= 0.5V, Measured at CS
- CS
- CS
Rising Threshold
= 0V
= –1mA to –10mA
< f
> f
= – 100 A
= 100 A
OSC
OSC
–
–
= 100mV, I
= 100mV, I
T
T
T
= 330pF
TEC
= 10k
= 10k
CM
+
, CS
= 2.5V
T
–
= 330pF, R
LOAD
LOAD
+
= 0 to – 50 A
= 0 to 50 A
, CS
+
, CS
–
T
–
= 10k
V
DD
2.462
2.450
– 100
– 1.1
– 2.5
MIN
–18
– 15
190
165
125
1.4
0.4
0.2
10
20
50
50
1
– 0.7 V
DD
–150
– 0.9
2.25
1.65
–1.5
– 1.5
TYP
225
225
150
–12
500
145
300
2.5
1.5
0.5
0.3
0.1
0.1
– 2
10
20
12
45
80
10
70
70
5
2
2
– 0.4
A
= 25 C.
LTC1923
V
DD
2.538
2.550
MAX
2.45
– 0.7
0.45
– 0.5
– 0.5
260
270
100
165
450
1.6
0.6
0.2
0.2
25
20
18
10
90
90
+ 0.2
UNITS
3
MHz
1923f
kHz
kHz
kHz
V/V
V/V
mV
mV
mA
mV
mA
mA
mV
mV
mV
mV
dB
nA
ns
V
V
V
V
V
A
A
A
A
V
V
V
V
V
V
A
s