HA17384SPS Datasheet, PDF (7/29 Pages) Hitachi Semiconductor – High Speed Current Mode PWM Control IC for Switching Power Supply

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
Electrical Characteristics
• Reference 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
Reference output voltage Vref
4.9
5.0
5.1
V Io = 1 mA
Line regulation
Regline
–
20
50
mV 12 V ≤ V_IN ≤ 25 V
Load regulation
Regload
–
10
25
mV –1 mA ≥ Io ≥ –20 mA
Output short current
los
–30 –100 –180 mA Vref = 0V
Temperature stability
∆Vref
–
80
– ppm/°C Io = –1 mA,
1
–20°C ≤ Ta ≤ 105°C
Output noise voltage
V_N
–
100
–
µV 10 Hz ≤ fnoise ≤ 10 kHz
1
Note: 1. Reference value for design.
• Triangular Wave Oscillator Part
Item
Symbol
Typical oscillating
fosc Typ
frequency
Maximum oscillating
fosc Max
frequency
Supply voltage
∆fosc 1
dependency of oscillating
frequency
Temperature dependency ∆fosc 2
of oscillating frequency
Discharge current of C_T
Isink_CT
Low level threshold voltage V_TLCT
High level threshold
voltage
V_THCT
Triangular wave amplitude ∆V_CT
Note: 1. Reference value for design.
Min Typ Max
47
52
57
500
–
–
–
±0.5 ±2.0
–
±5.0
–
7.5
8.4
9.3
–
1.2
–
–
2.8
–
–
1.6
–
Unit
kHz
kHz
Test Condition
C_T = 3300 pF,
R_T = 10 kΩ
%
12 V ≤ V_IN ≤ 25 V
% –20°C ≤ Ta ≤ 105°C
mA V_CT = 2.0 V
V
V
V
∆V_CT = V_THCT – V_TLCT
Note
1
1
1
1
(The condition is: Ta = 25°C, V_IN = 15 V, C_T = 3300 pF, R_T = 10 kΩ without notice)
• Error Amplifire Part / OVP Part
Item
Symbol Min Typ Max Unit
Test Condition
Note
Non-inverting input voltage V_FB
2.42 2.50 2.58
V
V_COMP = 2.5 V
Input bias current
I_IB
–
–0.2 –2.0
µA V_FB = 5.0 V
Open loop voltage gain
A_VOL
65
90
–
dB 2.0 V ≤ V_O ≤ 4.0 V
Unity gain bank width
BW
0.7
1.0
–
MHz
Power supply voltage
rejection ratio
PSRR
60
70
–
dB 12 V ≤ V_IN ≤ 25 V
Output sink current
I_{Osink EA}
3.0
9.0
–
mA V_FB = 2.7 V, V_COMP = 1.1 V
Output source current
I_{Osource EA}
–0.5 –0.8
–
mA V_FB = 2.3 V, V_COMP = 5.0 V
High level output voltage V_{OH EA}
5.5
6.5
7.5
V
V_FB = 2.3 V,
R_L = 15 kΩ(GND)
Low level output voltage
V_{OL EA}
–
0.7
1.1
V
V_FB = 2.7 V,
R_L = 15 kΩ(Vref)
OVP latch threshold
voltage
V_OVP
6.0
7.0
8.0
V Increase FB terminal voltage 1
OVP (FB) terminal input
I_FB(OVP)
–
30
50
µA V_FB = 8.0 V
1
current
OVP latch reset V_IN voltage V_{IN(OVP RES)} 6.0
7.0
8.0
V
Decreasing V_IN after OVP
1
latched
Note: 1. These values are not prescribe to the HA17384SPS/SRP because OVP function is not included.
Rev.3.00 Jun 15, 2005 page 7 of 28