Filter
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MB39A105
6
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ELECTRICAL CHARACTERISTICS
(VCC = 3.3 V, Ta = +25 °C)
*: Standard design value.
Parameter
Symbol
Pin
No
Conditions
Value
Unit
Min Typ Max
1. Under voltage
lockout
protection circuit
block [UVLO]
Threshold voltage V
TLH 3VCC = 1.15 1.35 1.55 V
2. Short-circuit
protection block
[SCP]
Threshold voltage V
TH 2 0.95 1.00 1.05 V
Short-circuit detection time
setting difference voltage
∆V
CSCP 2 0.15 0.20 0.25 V
Input source current I
CSCP 2CSCP = 0.85 V −1.76 −0.88 −0.44 µA
Reset voltage VRST 3VCC = 1.1 1.3 1.5 V
SCPOD terminal output
leak current
I
LEAK 4SCPOD = 3.3 V 01.0µA
SCPOD terminal output on
resistor
R
ON 4SCPOD = 1 mA 50 100 Ω
3. Triangular
wave oscillator
block
[OSC]
Oscillation frequency fosc 5 RT = 7.5 kΩ 450 500 550 kHz
Frequency temperature
variation
∆f
OSC/
f
OSC
5Ta = 0 °C to +85 °C 1* %
4. Soft-start block
[CS]
Charge current I
CS 2CSCP = 0 V −16 −11 −6 µA
5. Error amplifier
block [Error Amp]
Threshold voltage V
TH 1FB = 0.5 V 0.495 0.5 0.505 V
Input bias current IB 1 −INE = 0 V −120 −30 nA
Voltage gain AV 8DC 70* dB
Frequency band width BW 8 A
V = 0 dB 1.1* MHz
Output voltage
VOH 8 1.17 1.27 1.37 V
VOL 8 40 200 mV
Output source current I
SOURCE 8FB = 0.5 V −80 −50 µA
Output sink current ISINK 8FB = 0.5 V 100 300 µA
6. PWM compar-
ator block
[PWM Comp.]
Maximum duty cycle Dtr 5 RT = 7.5 kΩ 85 90 95 %
7.Output block
[Drive]
Output source current I
SOURCE 5
OUT = 0 V,
Duty ≤ 5%
(t = 1/fosc×Duty)
−400* mA
Output sink current I
SINK 5
OUT = 3.3 V,
Duty ≤ 5%
(t = 1/fosc×Duty)
400* mA
Output ON resistor
R
OH 5OUT = −15 mA 4.0* Ω
ROL 5OUT = 15 mA 3.0 6.0 Ω
8. General block
Standby current ICCS 3RT = OPEN 010µA
Power supply current I
CC 3RT = 7.5 kΩ1.2 1.8 mA