HA17384SPS Datasheet, PDF (9/29 Pages) Hitachi Semiconductor – High Speed Current Mode PWM Control IC for Switching Power Supply

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
Electrical Characteristics (cont.)
• UVL Part
(The condition is: Ta = 25°C, V_IN = 15 V, C_T = 3300 pF, R_T = 10 kΩ without notice)
Item
Symbol Min Typ Max Unit
Test Condition
Note
Threshold voltage for
V_{TH UVL}
14.5 16.0 17.5
V Turn-ON voltage
1
high V_IN level
7.6
8.4
9.2
V
when V_IN is rising
2
Threshold voltage for
V_{TL UVL}
9.0 10.0 11.0
V Minimum operating
1
low V_IN level
6.8
7.6
8.4
V voltage after turn-ON
2
V_IN UVL hysteresis voltage V_{HYS UVL}
5.0
6.0
7.0
V
V_{HYS UVL} = V_{TH UVL} – V_{TL UVL}
1
0.6
0.8
1.0
V
2
Vref UVL threshold voltage V_{T Vref}
4.3
4.7
Vref
V Voltage is forced toVref
terminal
Notes: 1. For the HA17384S/H.
2. For the HA17385H.
• Total Characteristics
Item
Symbol Min Typ Max Unit
Test Condition
Operating current
Standby current
Current of latch
I_IN
I_STBY
I_LATCH
7.0 10.0 13.0
120 170 230
200 270 340
mA C_L = 1000 pF, V_FB = V_CS = 0 V
µA Current at start up
µA
V_FB = 0 V after V_FB = V_OVP
Power supply zener
V_INZ
voltage
31
34
37
V
I_IN + 2.5 mA
Overheat protection
starting temperature
Tj_TSD
–
160
–
°C
Notes: 1. These values are not prescribe to the HA17384SPS/SRP because OVP function is not included.
2. V_IN = 8.5 V in case of the HA17384H.
3. These values are not prescribe to the HA17384SPS/SRP because TSD function is not included.
4. Reference value for design.
Note
1, 2
3, 4
Rev.3.00 Jun 15, 2005 page 9 of 28