LM51031D HTC [HTC Korea TAEJIN Technology Co.], LM51031D Datasheet - Page 3

• Manufacturer Part Number: LM51031D
• Description: Fast PFET Buck Controller
• Manufacturer: HTC [HTC Korea TAEJIN Technology Co.]

(Specifications apply for 4.5V ≤ V
Oscillator
Frequency
Charge Current
Discharge Current
Maximum Duty Cycle
Short Circuit Timer
Charge Current
Fast Discharge Current
Slow Discharge Current
Start Fault Inhibit Time
Valid Fault Time
GATE Inhibit Time
Fault Duty Cycle
CS Comparator
Fault Enable CS Voltage
Max CS Voltage
Fault Detect Voltage
Fault Inhibit Voltage
Hold Off Release Voltage
Regulator Threshold Voltage Clamp
C
Regulator Threshold Voltage
Fault Threshold Voltage
Threshold Line Regulation
Input Bias Current
Voltage Tracking
Input Hysteresis Voltage
Power Stage
GATE DC low Saturation Voltage
GATE DC High Saturation Voltage
Rise Time
Fall Time
V
Turn-On Threshold
Turn-Off Threshold
Hysteresis
Current Drain
I
I
Shutdown I
3. Guaranteed by design, not 100% tested in production.
Fast PFET Buck Controller
ELECTRICAL CHARACTERISTICS
CC
C
CC
FB
Comparator
Monitor
Characteristic
CC
CC
-
V
-
-
V
1.0 V < V
2.55 V > V
2.4 V < V
0 V < V
2.6 V > V
2.4 V > V
-
V
V
Minimum V
V
V
V
T
T
T
T
4.5 V ≤ V
V
(Regulator Threshold - Fault
Threshold Voltage)
-
V
V
V
C
C
-
4.5 V < V
3.0 V < V
V
V
J
J
J
J
COSC
FB
FB
CS
FB
CS
FB
CC
COSC
CC
C
1.4 V < V
2.7 V > V
1 - (t
FB
COSC
GATE
GATE
FB
≤ 16V, 3V ≤ V
= 25℃ (Note 3)
= 0 to 125℃
= 25℃ (Note 3)
= 0 to 125℃
OSC
= 1.0 V
= 1.5 V
= 0 V
= 0 V
= when GATE goes high
= 1.5 V
= 1.0 V; CS = 0.1 uF; V
= 4.0
= V
= 1.2V
= 2.7V;200 mA Source; V
OFF
= 1.0 nF; 1.5 V < V
= 1.0 nF; 1.5 V < V
= 1.0V;200 mA Sink
CS
= 470 pF
= V
C
CS
CS
CS
CS
CC
C
CC
= 10 V; V
/t
< 2.5 V
CS
Test Conditions
COSC
COSC
CS
CS
< 16 V, Gate Nonswitching
ON
< 2.0 V
< 1.5 V
> 2.4 V
> 1.5 V
< 16 V, Gate switching
≤ 16 V
< 2.4 V
= 2.0 V
)
< 2.0 V
> 2.0 V
− 3 −
C
FB
≤ 16V, 0℃ ≤ T
= 1.2 V
GATE
GATE
C
COSC
=V
< 9.0 V
< 9.0 V
GATE
= 2.0 V
J
≤ 125℃, unless otherwise specified.)
0.725
1.225
1.210
4.100
4.085
80.0
40.0
1.12
1.10
175
4.0
0.7
0.2
9.0
2.5
0.4
Min
160
70
65
-
-
-
-
-
-
-
-
-
-
-
-
-
0.866
1.250
1.250
4.300
4.200
1.15
1.15
83.3
0.85
100
TYP
2.5
2.6
2.4
1.5
0.7
4.0
200
110
680
264
130
500
0.3
3.1
1.2
1.5
4.5
2.7
66
15
25
25
6
1
6
LM51031
1.275
1.290
4.500
4.415
1.035
1.17
1.19
0.45
Max
120
1.0
6.0
4.0
240
325
200
900
1.4
4.6
1.5
2.1
15
80
10
23
20
60
60
4
-
-
-
-
-
-
-
HTC
Unit
kHz
ms
ms
ms
mA
mA
mV
mV
mV
mV
uA
uA
uA
uA
uA
uA
ns
ns
%
%
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A