LV8805V Datasheet, PDF (2/9 Pages) Sanyo Semicon Device – PC and Server Fan Motor Driver

LV8805V
Continued from preceding page.
*2: Do not exceed Tjmax=150°C.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Allowable Operating Conditions at Ta = 25°C
Parameter
VCC supply voltage
SOFTST input voltage range
FR input voltage range
MINSP input voltage range
Symbol
VCC
VSOFTST
VFR
VMINSP
Conditions
Ratings
Unit
6 to 15 V
0 to VREG V
0 to VREG V
0 to VREG V
Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Circuit current 1
Charge pump block
ICC1
2.6
3.6 mA
Charge pump output voltage
Regulator block
VVG
17
V
5V regulator voltage
Output on resistance
VVREG
4.75
5
5.25 V
Sum of high-/low-side output transistor on
resistance
Startup oscillator (OSC) pin
Ron (H+L) IO = 0.7A, VCC = 12V, VG = 17V
1.2
2Ω
OSC pin charge current
OSC pin discharge current
PWM input (PWMIN) pin
IOSCC
IOSCD
-2.5
μA
2.5
μA
High-level input voltage range
Low-level input voltage range
Range of PWM input frequency
Forward/reverse switching pin
VPWMINH
VPWMINL
fPWMIN
2.5
VREG
V
0
1
V
15
60 kHz
High-level input voltage range
Low-level input voltage range
FG, 1/2FG, and RD output pins
VFRH
VFRL
Order of current application :
UOUT→VOUT→WOUT
Order of current application :
UOUT→WOUT→VOUT
2.5
VREG
V
0
1
V
FG output pin low-level voltage
FG output pin leak voltage
1/2FG output pin low-level voltage
1/2FG output pin leak voltage
RD output pin low-level voltage
RD output pin leak voltage
Current limiter circuit
VFG
ILFG
V1/2FG
IL1/2FG
VRD
ILRD
When IO is 2mA
When VFG is 16V
When IO is 2mA
When V1/2FG is 16V
When IO is 2mA
When VRD is 16V
0.25
0.35 V
1 μA
0.25
0.35 V
1 μA
0.25
0.35 V
1 μA
Limiter voltage
Constraint protection circuit
VRF
Limit current set to 1A when RF is 0.25Ω.
0.225
0.25 0.275 V
CT pin high-level voltage
CT pin low-level voltage
CT pin charge current
CT pin discharge current
ICT charge/discharge ratio
Soft start circuit
VCTH
VCTL
ICTC
ICTD
RCT
2.25
2.8
2.95 V
0.43
0.5
0.65 V
-2.9
-2.5
-2.2 μA
0.21
0.25
0.32 μA
7
10
13
Soft start releasing voltage
SOFTST pin charge current
Thermal protection circuit
VSOFTST
ISOFTST
2.5
V
0.6
μA
Thermal protection circuit operating
temperature
TSD
Design target *
150
180
210 °C
* : 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.
No.A1747-2/9