MC34710 Datasheet, PDF (8/18 Pages) Motorola, Inc – Adjustable Dual Output Switching Power Supply

ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. DYNAMIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 4.75V ≤ V_IO ≤ 5.25V, 13V ≤ V_B+ ≤ 32V, and 0°C ≤ T_J ≤ 105°C, unless otherwise noted.
Typical values noted reflect the approximate parameter mean at T_A = 25°C under nominal conditions unless otherwise noted
Characteristic
Symbol
Min
Typ
Max
Unit
VI _/O SWITCHING REGULATOR
Duty Cycle
Switching Rise and Fall Time
Load Resistance = 100Ω, V_B+ = 30V
D
t_R, t_F
45
49
55
%
ns
20
35
50
SUPERVISOR CIRCUITRY (RST)
RST Delay
C_delay = 0.1μF
RST Filter Time
V_B+ = 9.0V
RST Fall Time
C_L = 100pF, R_PULLUP = 4.7kΩ, 90% to 10%
t _DELAY
ms
40
60
80
t _FILTER
μs
2.0
4.0
8.0
t_F
ns
–
25
75
C Delay
Charge Current
Threshold Voltage
INTERNAL OSCILLATOR
I_CDLY
2.0
3.5
5.0
μA
V_THCD
1.7
2.0
2.2
V
Charge Pump and V_I/O Switching Regulator Operating Frequency
V_B+ = 12 to 32V
f _OP
kHz
140
170
260
34710
8
Analog Integrated Circuit Device Data
Freescale Semiconductor