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PDF BD39002EFV-C Data sheet ( Hoja de datos )

Número de pieza BD39002EFV-C
Descripción Buck-Boost Switching Regulator + LDO + Reset + Watch Dog Timer
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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Datasheet
Power Management IC for Automotive Microcontroller
Buck-Boost Switching Regulator + LDO
+ Reset + Watch Dog Timer
BD39002EFV-C
General Description
BD39002EFV-C is a power management IC with
buck-boost switching regulator controller (DC / DC1),
LDO, reset and WDT.
The BD39002EFV-C includes protection circuits, such
as Under voltage, Over voltage, Over current and TSD.
Features
Automatically controlled buck-boost switching
regulator with 40 V rated VCC, DC / DC and LDO
input
5 V fixed output secondary LDO
Configurable Sequence control
Over Current protection
DC / DC1: Adjustable voltage with external resistors
LDO: Integrated
Over voltage / Under voltage detection
Reset for LDO and WDT
Window Watchdog Timer
HTSSOP-B30 package
Key Specifications
Input voltage range
4.0 V to 30 V
(Startup voltage needs to be above 4.5V.)
Output voltage
Buck-Boost DC / DC1 FB Voltage
0.8 V
Secondary LDO
5.0 V
Reference voltage accuracy
Buck-Boost DC / DC1 FB Voltage
±2 %
Secondary LDO
±2 %
Oscillation frequency
200 to 550 kHz
Max output current
Secondary LDO
600 mA
Stand-by Current
0 μA (Typ)
Operating temperature range
-40 °C to 125 °C
AEC-Q100 Qualified
Package
HTSSOP-B30
W (Typ) × D (Typ) × H (Max)
10.00 mm × 7.60 mm × 1.00 mm
Applications
Microcontroller for Automotive
Typical Application Circuit
Simplified Circuit1
Simplified Circuit2
VCC
EN1
CL
VREG
OUTH
VO1 RT
SS1
VL
VDD
FB1 OUTL
COMP1
VO1
VS2
PGND1
VO2
EN2 CT
ENWD
CLK
RTW
SEL_UVLO
GND
RST2#
RSTWD#
PG1
PG2
VO1
VO2
Buck-Boost Switching Regulator + Secondary LDO
VCC
EN1
CL
VERG
OUTH
VO1 RT
SS1
VL
VDD
FB1 OUTL
COMP1
VO1
VS2
PGND1
VO2
EN2 CT
ENWD
CLK
RTW
SEL_UVLO
GND
RST2#
RSTWD#
PG1
PG2
Buck Switching Regulator + Secondary LDO
VO1
VO2
Product structure: Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product is not designed for protection against radioactive rays
1/43
TSZ02201-0T2T0AM00200-1-2
Oct.29.2014 Rev.001

1 page




BD39002EFV-C pdf
BD39002EFV-C
Datasheet
Electrical Characteristic
(Unless otherwise specified: -40 °C Ta +125 °C, 4 V VCC 30 V, 5 V VS2 10 V)
Parameter
Limits
Symbol
Unit
Min Typ Max
All
Standby Current 1
Standby Current 2
Circuit Current
Oscillation Frequency
VREG Output Voltage
VDD Output Voltage
UVLO_VCC Detection Voltage 1
UVLO Hysteresis Voltage 1
UVLO_VCC Detection Voltage 2
UVLO_VCC Release Voltage 2
UVLO Hysteresis Voltage 2
EN1 L Threshold
EN1 H Threshold
EN1 Input Resistance
SEL_UVLO Threshold
SEL_UVLO Output Current
IST1
IST2
IVCC
FOSC
VREG
VDD
VUVLOVCC1
VUVVCCHYS1
VUVLOVCC2
VUVVCCRE2
VUVVCCHYS2
VEN1L
VEN1H
REN1
VSEL_UVLO
ISEL_UVLO
-
-
5
315
3.0
4.5
3.30
200
5.27
5.35
50
-
2.5
180
-
5
0
-
8
350
3.5
5
3.60
400
5.58
5.67
75
-
-
375
VREG / 2
14
10
30
12
385
4.0
5.5
3.90
600
5.89
6.0
-
0.5
-
570
-
23
μA
μA
mA
kHz
V
V
V
mV
V
V
mV
V
V
k
V
μA
DC / DC1 (Buck - Boost DC / DC Controller)
FB1 Voltage
VREF08
FB1 Input Bias Current
Soft Start Quick Charge Current
Soft Start Charge Current
Soft Start selected Voltage
IFB1
ISS0
ISS1
VSS0
Soft Start End Voltage 1
VSS1
Soft Start Cramp Voltage
VCC - VL Voltage
Hi - Side OUTH ON - Resistance
Lo - Side OUTH ON - Resistance1
Lo - Side OUTH ON - Resistance2
Hi - Side OUTL ON - Resistance
Lo - Side OUTL ON - Resistance
Over current detection CL voltage (Low)
Over current detection CL voltage (High)
Maximum ON Duty (OUTL)
VSSCL1
VL
RONHH
RONHL1
RONHL2
RONLH
RONLL
VCL_L
VCL_H
TON
0.784
-1
55
5
0.3
-
2.2
8
-
-
-
-
-
86
172
-
0.800
0
110
10
0.7
VSS0+
VREF08
2.8
10
1.7
3
-
18
22
100
200
92
0.816
+1
165
15
1.5
-
3.3
12
-
-
30
-
-
114
228
-
V
μA
μA
μA
V
V
V
V
mV
mV
%
Condition
Ta = 25 °C
Ta = 125 °C
RT = 33 k, FB1 = 1.0 V
RT = 33 k
VCC = 12 V
SEL_UVLO = OPEN
SEL_UVLO = OPEN
SEL_UVLO = GND
SEL_UVLO = GND
SEL_UVLO = GND
VCC = 5 V
SEL_UVLO = 0 V
FB1 = COMP1
FB1 = 0.8 V
SS1 = open
VCC 12 V VCC - VL
VCC = 12 V OUTH - VCC
VCC = 12 V OUTH - VL
VCC = 4 V OUTH - PGND
VCC = 12 V
VCC = 12 V
VCC - CL Voltage, VCC = 12 V
VCC - CL Voltage, VCC = 12 V
FOSC = 600 kHz
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
5/43
TSZ02201-0T2T0AM00200-1-2
Oct.29.2014 Rev.001

5 Page





BD39002EFV-C arduino
BD39002EFV-C
Datasheet
Description of Blocks
Under Voltage Lockout circuit (VCC_UVLO)
This is a Low Voltage Error Prevention Circuit.
In case of SEL_UVLO = OPEN, if the VCC drops below 3.6 V (Typ), the VCC_UVLO is activated and the output circuit
shuts down. In case of SEL_UVLO = GND, if the VCC drops below 5.58 V (Typ), the VCC_UVLO is activated and the
output circuit shuts down.
Thermal Shut Down (TSD)
The TSD protects the device from overheating.
If the chip temperature (Tj) reaches 175 °C (Typ), the circuit shuts down
Over Voltage Detection (OVD)
If DC / DC1 and LDO output voltage exceeds OVD, each PGOOD Pin turns Low.
DC / DC1 OVD monitors FB1 voltage and LDO OVD monitors VO2 voltage.
PGOOD pin is an open drain output and a pull up resistor should be connected to PGOOD if this function is being used.
Low Voltage Detection (LVD)
If DC / DC1 and LDO output voltage is below LVD, each PGOOD Pin turns Low.
DC / DC1 LVD monitors FB1 voltage and LDO LVD monitors VO2 voltage.
PGOOD pin is an open drain output, and a pull up resistor should be connected to PGOOD if this function is being used.
Over Current Protection (OCP)
DC / DC1 has two levels over current protection with different control system as shown below.
1) OCP1 low level operations (OCP1_L)
In case the voltage between VCC and CL exceeds 100 mV (Typ), OCP1 (low level operation) is activated and the
switching pulse width of OUTH and the switching pulse width of OUTL are limited. Also, if this pulse limited status
continues during 256 clock times where the FB1 pin voltage drops below the under voltage detection level, the soft
start pin capacitor is discharged and the output is turned OFF during 8192 clock times.
During the 8192 clock in which the output is turned OFF, the logic of OUTH and OUTL pin changes as follows;
OUTH = H and OUTL = H. After the 8192 clock the chip returns to normal operations and the soft start pin is
recharged.
2) OCP1 high level operations (OCP1_H)
In case the inter VCC - CL pin voltage exceeds 200 mV (Typ), the chip goes into OCP1 high level operations, the
soft start pin capacitor is discharged and the output is turned OFF for 8192 clk. During the 8192 clock in which the
output is turned OFF, the logic of OUTH and OUTL pin changes as follows; OUTH = H and OUTL = H. After the
8192 clock the chip returns to normal operations and the soft start pin is recharged.
CL
OVP
FB1
UVP
OCP LOW level operation
OCP LOW level operation
OCP High level
operation
VO1
ISW
PG1
SS1
OUTH
Discharge SS
256clk
8192clk
Discharge SS
8192clk
OUTL
OUTH=High,OUTL=High Normal operation
Output pulse is limited
fix to logic
OUTH=High,OUTL=High
fix to logic
Figure 15. Timing chart for DC / DC1 protection
Normal operation
If the output current of LDO exceed OCP, the output current is limited and the output voltage is lowered.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
11/43
TSZ02201-0T2T0AM00200-1-2
Oct.29.2014 Rev.001

11 Page







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