TOP232-234
Conditions
(Unless Otherwise Specified)
See Figure 34
Parameter
Symbol
Min
Typ Max
Units
SOURCE = 0 V; TJ = -40 to 125 °C
CONTROL FUNCTIONS (cont.)
PWM Gain
- 0.01
1.9
5.9
15
%/mA/°C
See Note A
Temperature Drift
External Bias
Current
lB
mA
See Figure 4
1.2
10
2.8
7.5
22
CONTROL
Current at Start of
Cycle Skipping
TJ = 25 °C
mA
Ω
Dynamic
Impedance
IC = 4 mA; TJ = 25 °C
ZC
See Figure 32
Dynamic
Impedance
0.18
7
%/°C
kHz
Temperature Drift
Control Pin
Internal Filter Pole
SHUTDOWN/AUTO-RESTART
VC = 0 V
VC = 5 V
-5.0
-3.0
-3.8
-1.9
-2.6
-0.8
Control Pin
lC (CH)
mA
TJ = 25 °C
Charging Current
Charging Current
Temperature Drift
See Note A
0.5
5.8
4.8
1.0
4
%/°C
Auto-restart Upper
vC(AR)
V
V
Threshold Voltage
Auto-restart Lower
Threshold Voltage
4.5
0.8
2
5.1
8
Auto-restart
Hysteresis Voltage
V
Auto-restart Duty
Cycle
%
Hz
Auto-restart
Frequency
1.0
B
7/01
25
PAM [ POWER ANALOG MICOELECTRONICS ]
