Table 2. Recommended Operating Conditions and Thermal Information
Parameter Symbol Min Typ Max Unit
Input Supply Voltage Range, V
DD
V
R
tied to V
DD
(Figure 9) 3.0 – 5.5 V
V
R
floating (Figure 9) 4.5 – 14 V
Output Voltage Range V
OUT
(RDSON sensing) 0.54 5.5 V
Output Voltage Range V
OUT
(DCR sensing) 0.6 3.6
3
V
Operating Junction Temperature Range T
J
-40 – 125 °C
Junction to Ambient Thermal
Impedan
ce
1
Θ
JA
– 35 – °C/W
Junction to Case Thermal Impedance
2
Θ
JC
– 5 – °C/W
NOTES:
2. For Θ
JC
, the “case” temperature is measured at the center of the exposed metal pad.
3. With margin
4
FN6849.3
December 16, 2011
1. Θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief
TB379
.
Table 3. Electrical Specifications
Unless otherwise specified V
DD
= 12 V, T
A
= -40
o
C to +85
o
C. Typical values are at
T
A
= 25
o
C. Boldface limits apply over the operating temperature range, -40°C to +85°C.
Parameter Condition Min
(Not
e 6)
Typ Max
(Note 6)
Unit
Input and Supply Characteristics
Supply current (I
DD
)
(No load on GH and GL)
f
SW
= 200 kHz – 16 30 mA
f
SW
= 1,000 kHz – 25 50 mA
Standby supply current (I
DD
)
EN = Low
no I
2
C/SMBus activity
– 2 5 mA
VR reference voltage (V
R
)
V
DD
≥ 6 V
I
VR
< 50 mA
4.5 5.2 5.5 V
V25 reference voltage (V
25
)
V
R
≥ 3 V
I
V25
< 50 mA
2.25 2.5 2.75 V
Output Characteristics
Output voltage adjustment range 0.6 – 5.5 V
Output voltage setpoint resolution
Set using resistors on V(0,1)
Set using resistor on VADJ
– 10
Table 8
– mV
Set using I
2
C/SMBus
– ±0.025 – % of
F.
S.
1
Output voltage accuracy Over line and load -1 1 %
VSEN input bias current VSEN = 5.5 V – 110 200 µA
Current sense differential input voltage
(ground referenced)
V
ISENA
- V
ISENB
-100 – 100 mV
Current sense differential input voltage
(V
OUT
referenced)
V
ISENA
- V
ISENB
-50 – 50 mV
Current sense input bias current Ground referenced -100 –
100 µA
Current sense input bias current
(V
OUT
referenced,
V
OUT
<= 3.6V)
ISENA -1 – 1 µA
ISENB -100 – 100 µA
Soft start delay duration range
5
Configurable via I
2
C/SMBus 0.007 – 500 s
ZL2005P