33730_12 Datasheet, PDF (8/28 Pages) Freescale Semiconductor, Inc – Switch Mode Power Supply with Multiple Linear Regulators

ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 5. Static Electrical Characteristic
Characteristics noted under conditions 6.0 V ≤ KA_V_BAT = V_BAT ≤ 26.5 V, -40°C ≤ T_A ≤ 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
V_{KAM_STUP}
4.5
—
—
V
Start-up Voltage (at the KA_VBAT pin), VDD3, VDD3 standby, VDDL Up
V_STUP
4.5
—
—
V
Over-voltage Shutdown
Voltage at KA_VBAT pin rising
V
V_{SHDN_R}
35
—
42
Under-voltage Lock-out
Voltage at KA_VBAT pin falling
Voltage at KA_VBAT pin rising
Under-voltage Lock-out Hysteresis⁽⁷⁾
V
V_{UVLO_F}
3.6
—
4.3
V_{UVLO_R}
3.7
—
4.4
V_{UVLO_HYS}
—
0.1
—
Sleep Quiescent Current (Sleep mode)
I_Q
V_IGN = 0 V, REGON = 0 V, I_VKAM = 0 mA, V_DD3 OFF, V_BAT = 14.0 V,
KA_V_BAT = 14 V (P1=1, P2=1, P3=1)
µA
—
—
500
SWITCHING REGULATOR (VDDH)
Buck Converter Output Voltage
V_BAT = 6.0 to 26.5 V, I_LOAD = 100 mA
V_BAT = 26.5 to 35 V, I_LOAD = 100 mA
V_DDH
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)⁽⁷⁾
SW Drain Source On Resistance⁽⁷⁾
I_D = 500 mA, V_BAT = 5.0 V
Thermal Shutdown Junction Temperature⁽⁷⁾
Thermal Shutdown Hysteresis⁽⁷⁾
VDD3 LINEAR REGULATOR
A
I_{LIM_SW}
-2.25
-3.5
-4.25
I_{LIM_SW_EX}
-3.75
-4.5
-6.00
R_DS(ON)
—
mΩ
—
200
TS_H
—
—
195
°C
TS_L
155
—
—
TS_HYS
1.0
—
20
°C
V_DD3 Output Voltage (Includes Line and Load Regulation)
I_VDD3 = 0 to -500 mA, See Table 2 for V_DD3 Output Settings
V_DD3
%
-3.0
—
3.0
V_DD3 Dropout Voltage (V_DDH - V_DD3)
V_{DD3_DO}
V
I_VDD3 = -800 mA (VDD3 set to 3.3 V via P1, P2, P3 and with an
—
1.1
1.5
external transistor)
V_{DD3_B} Current Limit, V_{DD3_B} = 0 V,
KA_V_BAT = 14 V, V_BAT = 14 V
KA_V_BAT = 5.0 V, V_BAT = 5.0 V
I_{VDD3B_Lim}
mA
-20
—
-50
-20
—
-50
Notes
7. Guaranteed By Design.
33730
8
Analog Integrated Circuit Device Data
Freescale Semiconductor