SI9108 Datasheet, PDF (2/5 Pages) Vishay Siliconix – 1-W High-Voltage Switchmode Regulator

Si9108
Vishay Siliconix
New Product
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to -V_IN (V_CC < +V_IN + 0.3 V)
V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V
+V_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 V
V_DS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 V
I_D (Peak) (300 µs pulse, 2% duty cycle). . . . . . . . . . . . . . . . . . . . . 2 A
I_D (rms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250 mA
Logic Inputs (RESET, SHUTDOWN, OSC IN) . . -0.3 V to V_CC + 0.3 V
Linear Inputs (FEEDBACK, SOURCE) . . . . . . . . . . . . . . -0.3 V to 7 V
HV Pre-Regulator Input Current (continuous) . . . . . . . . . . . . . . .5 mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to 125°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to 85°C
Junction Temperature (T_J) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Power Dissipation (Package)^a
14-Pin Plastic DIP (J Suffix)^b. . . . . . . . . . . . . . . . . . . . . . . . . 750 mW
16-Pin Plastic Wide-Body SOIC (W Suffix)^c . . . . . . . . . . . . . 900 mW
20-Pin PLCC (N Suffix)^d . . . . . . . . . . . . . . . . . . . . . . . . . . . 1400 mW
Thermal Impedance (Θ_JA)
14-Pin Plastic DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167°C/W
16-Pin Plastic Wide-Body SOIC . . . . . . . . . . . . . . . . . . . . . . 140°C/W
20-Pin PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90°C/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 6 mW/°C above 25°C
c. Derate 7.2 mW/°C above 25°C
d. Derate 11.2 mW/°C above 25°C
RECOMMENDED OPERATING RANGE
Voltages Referenced to -V_IN
V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 V to 13.5 V
+V_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 V to 120 V
f_OSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 kHz to 1 MHz
R_OSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 kΩ to 1 MΩ
Linear Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V_CC - 3 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V_CC
SPECIFICATIONS^a
Parameter
Reference
Output Voltage
Output Impedance^e
Short Circuit Current
Temperature Stability^e
Long Term Stability^e
Oscillator
Maximum Frequency^e
Initial Accuracy
Voltage Stability
Temperature Coefficient^e
Error Amplifier
Feedback Input Voltage
Input BIAS Current
Open Loop Voltage Gain^e
Input Offset Voltage
Unity Gain Bandwidth^e
Dynamic Output Impedance
Output Current
Power Supply Rejection
Symbol
V_R
Z_OUT
I_SREF
T_REF
f_MAX
f_OSC
∆f/f
T_OSC
V_FB
I_FB
A_VOL
V_OS
BW
Z_OUT
I_OUT
PSRR
Test Conditions
Unless Otherwise Specified
DISCHARGE = -V_IN = 0 V
V_CC = 10 V, +V_IN = 48 V
R_BIAS = 820 kΩ , R_OSC = 910 kΩ
OSC IN = V_IN (OSC Disabled)
R_L = 10 MΩ
OSC IN = -V_IN
OSC IN = - V_IN, V_REF = -V_IN
OSC IN = -V_IN
t = 1000 hrs, T_A = 125°C
R_OSC = 0
See Note e
∆f/f = f (13.5 V) - f (9.5 V)/f (9.5 V)
FB Tied to COMP
OSC IN = -V_IN (OSC Disabled)
OSC IN = -V_IN, V_FB = 4 V
OSC IN = -V_IN (OSC Disabled)
OSC IN = -V_IN
Source (V_FB = 3.4 V)
Sink (V_FB = 4.5 V)
10 V ≤ V_CC ≤ 13.5 V
Limits
D-Suffix, -40°C to 85°C
Temp^b Min^c Typ^d Max^c
Unit
Room
Room
Room
Full
Room
3.92 4.00
4.08
V
15
300
45
kΩ
70
100
130
µA
0.25
1.0
mV/°C
5.00 25.00
mV
Room
Room
Room
Full
1
3
MHz
32
40
48
kHz
10
15
%
200
500 ppm/°C
Room
Room
Room
Room
Room
Room
Room
Room
Room
3.96
4
4.04
25
500
60
80
±15
±40
0.5
0.8
1
-1.2 -0.32
0.05 0.08
70
V
nA
dB
mV
MHz
kΩ
mA
dB
S-62188—Rev. A, 05-Apr-99
2
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