
SMH4814 
ABSOLUTE MAXIMUM RATINGS 
Preliminary Information 
Summit Microelectronics, Inc 
2080  2.0  07/21/05 
7 
Temperature Under Bias ................  –55°C to 125°C 
Power Supply Current (I
DD
) ............................  15 mA 
Storage Temperature ......................  –65°C to 150°C 
Lead Solder Temperature (10 seconds) ......... 300°C 
Terminal Voltage with Respect to V
SS
: 
5V_CAP............................................. -0.3 to +7V 
V12, SDA, SCL, UV, OV, CBSENSE, , EN/TS, 
FAULT#,......................................... –0.3 to +15V 
VGATE_HS, VGATE
A
, VGATE
B
 PUP
A
, PUP
B
, 
PUP
C
, and PUP
D
.....................  -0.3 to V12+0.7V 
PD1, PD0, FB
A
, FB
B
, FB
C
, FB
D
, FEED
A
, FEED
B
, 
RESET#, DRAIN SENSE, SLEW_CNTL.  -0.3 to 
5V_CAP+0.7V 
Open Drain Output Short Circuit Current ...... 100mA 
Junction Temperature ..................................... 150°C 
ESD Rating per JEDEC ................................. 2000V 
Latch-Up testing per JEDEC ..................      ±100mA
DC OPERATING CHARACTERISTICS 
RECOMMENDED OPERATING CONDITIONS 
Temperature Range (Industrial) ......... -40°C to 85°C 
(Commercial) ..........  -5°C to 70°C 
Supply Voltage (V
12
) (I
DD
 = 3 mA) ............11V to 13V 
Thermal Resistance (
θ
JA) 28-pin QFN ........ 79°C/W 
Thermal Resistance (
θ
JA) 28-pin SOIC ...... 80°C/W 
Moisture Classification Level 1 (MSL 1) per J-STD-020 
Reliability Characteristics: 
Data Retention ...................................100 Years 
Endurance ..................................100,000 Cycles 
Stresses listed under Absolute Maximum Ratings may cause 
permanent damage to the device.  These are stress ratings only, 
and functional operation of the device at these or any other 
conditions outside those listed in the operational sections of this 
specification is not implied.  Exposure to any absolute maximum 
rating for extended periods may affect device performance and 
reliability. 
Over recommended operating conditions, unless otherwise noted. All voltages are relative to V
SS
. 
Symbol 
Parameter 
Conditions 
Min. 
Typ. 
Max. 
Units 
V
12
I
12
V
GATEHI
 Supply Voltage 
 I
12
 = 4mA 
 (1) 
11 
12 
13 
V 
 Supply Current 
2 
13 
mA 
 VGATE
A
, VGATE
B
, VGATE_HS High 
 Voltage 
V
12
 – V
GT
V
12
V 
V
GATELO
 VGATE
A
, VGATE
B
, VGATE_HS Low 
 Voltage 
 I
GATE
 = 1mA 
0.1 
V 
V
SENSE
I
SENSE
V
ENTS
V
ENTSHYST
V
IH
V
IL
V
OL
I
IL
 Drain Sense Threshold 
 V
SENSE
 = V
SS
2.45 
2.50 
2.55 
V 
μ
A 
 Drain Sense Current 
9 
10 
11 
 EN/TS Threshold 
2.45 
2.50 
2.55 
V 
 EN/TS Hysteresis 
10 
mV 
3 
5 
V 
 RESET#, PD1, PD0, SCL, SDA, FB
A
, 
FB
B
, FB
C
, FB
D
–0.1 
2 
V 
 FAULT#, PUP
A
, PUP
B
, PUP
C
, PUP
D
SCL, SDA, CBSENSE, EN/TS, FB
A
, FB
B
, 
FB
C
, FB
D
PD1, PD0 
 I
OL
 = 3mA 
 V
IL
 = V
SS
0 
0.4 
V 
μ
A 
1 
I
IL (PD)
I
IH (RESET#)
V
GT
Notes: 
 V
IL
 = V
SS
 V
IH
 = 5V_CAP 
10 
μ
A 
μ
A 
RESET# 
10 
VGATE_HS Threshold 
1 - This value is set by the R
D
 resistor (see page 22, Dropper Resistor Selection). 
1.5 
2.5 
4 
V