MC33997 Datasheet, PDF (8/20 Pages) Motorola, Inc – Switching Power Supply with Linear Regulators

Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS (continued)
Characteristics noted under conditions 9.0 V ≤ V_PWR ≤ 16 V, -40°C ≤ T_J = T_A ≤ 125°C, using the typical application circuit (see
Figure 8) 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
SENSOR SUPPLIES V_REF1, V_REF2
V_REF On-Resistance, T_A = -40°C
R_DS(on)
I_VREF = 200 mA, I_VDDH = 200 mA, V_PWR = KA_V_PWR = 14 V, EN = 5.0 V
–
mΩ
–
280
V_REF On-Resistance, T_A = +25°C
R_DS(on)
I_VREF = 200 mA, I_VDDH = 200 mA, V_PWR = KA_V_PWR = 14 V, EN = 5.0 V
–
V_REF On-Resistance, T_A = +125°C
R_DS(on)
I_VREF = 200 mA, I_VDDH = 200 mA, V_PWR = KA_V_PWR = 14 V, EN = 5.0 V
–
mΩ
–
350
mΩ
–
455
V_REF Short-to-Battery Detect Current
V_PWR = KA_V_PWR = 14 V, EN = 5.0 V, SNSEN = 5.0 V
I_{SC_Bat}
mA
500
–
900
V_REF Short-to-Ground Detect Current
V_PWR = KA_V_PWR = 14 V, EN = 5.0 V, SNSEN = 5.0 V
I_{SC_Gnd}
mA
500
–
900
Maximum Output Capacitance (Total) (Note 13)
C_VREF
33
–
39
nF
SUPERVISORY CIRCUITS
PWROK Undervoltage Threshold on V_DDL, FBL Ramps Down
V_PWR = KA_V_PWR = 14 V, I_VDDH = 200 mA
V_FBL(thL)
V
2.6
–
3.1
PWROK Undervoltage Threshold on V_DDH
V_PWR = KA_V_PWR = 14 V, I_VDDH = 200 mA
V_DDH(thL)
V
4.5
–
4.8
V_DDH Overvoltage Threshold
V_PWR = KA_V_PWR = 10 V, I_VDDH = 200 mA
V_DDH(thH)
5.12
–
V
5.7
PWROK Open Drain On-Resistance
V_PWR = KA_V_PWR = 14 V, EN = 5 V, I_PwrOK = 5.0 mA
R_DS(on)
–
Ω
–
200
VKAMOK Threshold,
V_PWR = KA_V_PWR = 14 V, I_VDDH = 200 mA
V_KAM(thL)
V
0.9
–
1.9
VKAMOK Threshold on V_PWR, V_PWR Ramps Up
KA_V_PWR = 14 V, I_VDDH = 200 mA
V_PWRok(th)
V
4.0
–
5.0
VKAMOK Open Drain On-Resistance
V_PWR = KA_V_PWR = 14 V, EN = 0 V, I_VKAMOK = 10 mA
R_DS(on)
50
Ω
–
200
Enable Input Voltage Threshold (Pin EN)
V_IH
1.0
–
2.0
V
Enable Pull-Down Current (Pin EN), EN = 1.0 V V_DDH to V_IL(min)
I_PD
500
–
1200
nA
Sensor Enable Input Voltage Threshold (Pin SNSEN)
V_IH
1.0
–
2.0
V
Sensor Enable Pull-Down Current (Pin SNSEN)
SNSEN = 1.0 V V_DDH to V_IL(min)
I_PD
nA
500
–
1200
Notes
13. Recommended value.
33997
8
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