SI9140 Datasheet, PDF (2/15 Pages) Vishay Siliconix – SMP Controller For High Performance Process Power Supplies

Si9140
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND.
V_DD, V_S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V
P_GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.3 V
V_DD to V_S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V
Linear Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3 V to V_DD +0.3 V
Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3 V to V_DD +0.3 V
Peak Output Drive Current . . . . . . . . . . . . . . . . . . . . . . . . . . .350 mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to 150°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Power Dissipation (Package)^a
16-Pin SOIC (Y Suffix)^b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW
16-Pin TSSOP (Q Suffix)^c . . . . . . . . . . . . . . . . . . . . . . . . . . . 925 mW
Thermal Impedance (Θ_JA)
16-Pin SOIC (Y Suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
16-Pin TSSOP (Q Suffix). . . . . . . . . . . . . . . . . . . . . . . . . . . . 135°C/W
Operating Temperature
C Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to 70°C
D Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to 85°C
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 7.2 mW/°C above 25°C.
c. Derate 7.4 mW/°C above 25°C.
* Exposure to Absolute Maximum rating conditions for extended periods may affect device reliability. Stresses above Absolute Maximum rating may cause
permanent damage. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be
applied at any one time.
RECOMMENDED OPERATING RANGE
Voltages Referenced to GND.
V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 V to 6.5 V
V_S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 V to 6.5 V
f_OSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 kHz to 2 MHz
R_OSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 kΩ to 250 kΩ
C_OSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 pF to 200 pF
Linear Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V_DD
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V_DD
V_REF Load Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >150 kΩ
SPECIFICATIONS
Parameter
Symbol
Test Conditions
Unless Otherwise Specified^a
3 V ≤ V_DD ≤ 6.5 V, V_DD = V_S
GND = P_GND
Reference
Output Voltage
Oscillator
Maximum Frequency^c
Accuracy
R_OSC Voltage
Voltage Stability^c
Temperature Stability^c
V_REF
f_MAX
f_OSC
V_ROSC
∆f/f
I_REF = -10 µA
T_A = 25°C
V_DD = 5 V, C_OSC = 47 pF, R_OSC = 5.0 kΩ
V_DD = 5 V
C_OSC = 100 pF, R_OSC = 7.50 kΩ, T_A = 25°C
4 V ≤ V_DD ≤ 6 V, Ref to 5 V, T_A = 25°C
Referenced to 25°C
Error Amplifier (C_OSC = GND, OSC Disabled)
Input Bias Current
I_FB
Open Loop Voltage Gain
A_VOL
Offset Voltage
V_OS
Unity Gain Bandwidth^c
BW
V_NI = V_REF , V_FB = 1.0 V
V_NI = V_REF
Output Current
Power Supply Rejection^c
I_EA
P_SRR
Source (V_FB = 1 V, NI = V_REF)
Sink (V_FB = 2 V, NI = V_REF)
3 V < V_DD < 6.5 V
Limits
C Suffix 0 to 70°C
D Suffix -40 to 85°C
Min^b
Typ
Max^b
1.455
1.477
1.50
1.545
1.523
2.0
0.85
1.0
1.15
1.0
-8
8
±5
-1.0
1.0
47
55
-15
0
15
10
-2.0
-1.0
0.4
0.8
60
Unit
V
MHz
V
%
µA
dB
mV
MHz
mA
dB
S-58034—Rev. G, 15-Mar-99
2
FaxBack 408-970-5600, request 70026
www.siliconix.com