Ordering number : ENA1407A
LV8804V
Bi-CMOS LSI
PC and Server
LV8804V
Allowable Operating Conditions at Ta = 25C
Parameter Symbol Conditions Ratings Unit
V supply voltage V 6 to 15 V
CC CC
SOFTST input voltage range V 0 to VREG V
SOFTST
FR input voltage range V 0 to VREG V
FR
CTL input voltage range V 0 to VREG V
CTL
MINSP input voltage range V 0 to VREG V
MINSP
Electrical Characteristics at Ta = 25C, V = 12V, unless otherwise specified
CC
Ratings
Parameter Symbol Conditions Unit
min typ max
Circuit current 1 I1 3 4mA
CC
Charge pump block
Charge pump output voltage V 17 V
VG
Regulator block
5V regulator voltage V 4.75 5 5.25 V
VREG
Output on resistance
High-side output transistor on resistance Ron (H) I = 0.7A, VG = 17V 0.6 1.0
O
Low-side output transistor on resistance Ron (L) I = 0.7A, V = 12V 0.6 1.0
O CC
Sum of high-/low-side output transistor on Ron (H+L) I = 0.7A, V = 12V, VG = 17V 1.2 2
O CC
resistance
Startup oscillator (OSC) pin
OSC pin charge current I C -2.5 A
OSC
OSC pin discharge current I D 2.5 A
OSC
Control voltage input (CTL) pin
Motor drive on voltage input range V ON 0 3 V
CTL
Motor drive off voltage input range V OFF 3.5 VREG V
CTL
Minimum speed setting pin
Minimum speed setting voltage input range V 1 1 3 V
MINSP
Minimum speed releasing voltage input range V 2 4 VREG V
MINSP
Forward/reverse switching pin
High-level input voltage range V H Order of current application : 4 VREG V
FR
UOUTVOUTWOUT
Low-level input voltage range V L Order of current application : 0 1 V
FR
UOUTWOUTVOUT
FG, 1/2FG, and RD output pins
FG output pin low-level voltage V When I is 2mA 0.25 0.35 V
FG O
1/2FG output pin low-level voltage V When I is 2mA 0.25 0.35 V
1/2FG O
RD output pin low-level voltage V When I is 2mA 0.25 0.35 V
RD O
Current limiter circuit
Limiter voltage V Limit current set to 1A when RF is 0.25. 0.225 0.25 0.275 V
RF
Constraint protection circuit
CT pin high-level voltage VH 2.25 2.8 2.95 V
CT
CT pin low-level voltage VL 0.43 0.5 0.65 V
CT
CT pin charge current IC -2.9 -2.5 -2.2 A
CT
CT pin discharge current ID 0.23 0.25 0.32 A
CT
ICT charge/discharge ratio R 7 10 13
CT
Soft start circuit
Soft start releasing voltage V 2.5 V
SOFTST
SOFTST pin charge current I 0.6 A
SOFTST
Thermal protection circuit
Thermal protection circuit operating TSD Design target * 150 180 210 C
temperature
* : Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since
it operates outside the IC's guaranteed operating range, the customer's thermal design should be performed so that the thermal protection circuit will not be
activated when the fan is running under normal operating conditions.
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