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33730_10 Datasheet, PDF (7/26 Pages) Freescale Semiconductor, Inc – Switch Mode Power Supply with Multiple Linear Regulators | |||
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ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 4. Static Electrical Characteristic
Characteristics noted under conditions 6.0 V ⤠KA_VBAT = VBAT ⤠26.5 V, -40°C ⤠TA ⤠125°C using the typical application circuit,
unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
GENERAL
Keep-Alive Start-up Voltage (at the KA_VBAT pin), VKAM Output Up
VKAM_STUP
4.5
â
â
V
Start-up Voltage (at the KA_VBAT pin), VDD3, VDD3 standby, VDDL Up
VSTUP
4.5
â
â
V
Over-voltage Shutdown
Voltage at KA_VBAT pin rising
V
VSHDN_R
35
â
42
Under-voltage Lock-out
Voltage at KA_VBAT pin falling
Voltage at KA_VBAT pin rising
Under-voltage Lock-out Hysteresis(6)
V
VUVLO_F
3.6
â
4.3
VUVLO_R
3.7
â
4.4
VUVLO_HYS
â
0.1
â
Sleep Quiescent Current (Sleep mode)
IQ
VIGN = 0 V, REGON = 0 V, IVKAM = 0 mA, VDD3 OFF, VBAT = 14.0 V,
KA_VBAT = 14 V (P1=1, P2=1, P3=1)
µA
â
â
500
SWITCHING REGULATOR (VDDH)
Buck Converter Output Voltage
VBAT = 6.0 to 26.5 V, ILOAD = 100 mA
VBAT = 26.5 to 35 V, ILOAD = 100 mA
VDDH
V
4.9
5.0
5.1
4.85
5.0
5.15
Switching Regulator Current Limit (see Figure 5)
Pulse-by-Pulse Current Limit
Extreme Current Limit (see Figure 5)(6)
SW Drain Source On Resistance(6)
ID = 500 mA, VBAT = 5.0 V
Thermal Shutdown Junction Temperature(6)
Thermal Shutdown Hysteresis(6)
VDD3 LINEAR REGULATOR
A
ILIM_SW
-2.25
-3.5
-4.25
ILIM_SW_EX
-3.75
-4.5
-6.00
RDS(ON)
â
mΩ
â
200
TSH
â
â
195
°C
TSL
155
â
â
TSHYS
1.0
â
20
°C
VDD3 Output Voltage (Includes Line and Load Regulation)
IVDD3 = 0 to -500 mA, See Table 1 for VDD3 Output Settings
VDD3
%
-3.0
â
3.0
VDD3 Dropout Voltage (VDDH - VDD3)
VDD3_DO
V
IVDD3 = -800 mA (VDD3 set to 3.3 V via P1, P2, P3 and with an
â
1.1
1.5
external transistor)
VDD3_B Current Limit, VDD3_B = 0 V,
KA_VBAT = 14 V, VBAT = 14 V
KA_VBAT = 5.0 V, VBAT = 5.0 V
IVDD3B_Lim
mA
-20
â
-50
-20
â
-50
Notes
6. Guaranteed By Design.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33730
7
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