BD6513F-E2 Rohm Semiconductor, BD6513F-E2 Datasheet - Page 16

• Manufacturer Part Number: BD6513F-E2
• Description: IC SWITCH HIGH SIDE 2CH SOP-8
• Manufacturer: Rohm Semiconductor
• Type: High Sider

Specifications of BD6513F-E2

• Input Type: Non-Inverting
• Number Of Outputs: 2
• On-state Resistance: 100 mOhm
• Current - Output / Channel: 600mA
• Current - Peak Output: 1.65A
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOP
• Output Voltage: - 0.3 V to 6.3 V
• Output Current: 500 mA
• Output Power: 560 mW
• Input Voltage: - 0.3 V to 6 V
• Operating Temperature Range: - 25 C to + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: BD6513F-E2; BD6513F-E2TR

Functional description
© 2009 ROHM Co., Ltd. All rights reserved.
BD6512F,BD6513F,BD6516F,BD6517F,BD2042AFJ,BD2052AFJ
www.rohm.com
1. Switch operation
2. Thermal shutdown (TSD)
3. Over current detection, limit circuit
4. Under voltage lockout(UVLO)
5. Error flag output
VDD(IN) pin and OUT pin are connected to the drain and the source of switch MOSFET respectively. And the VDD(IN) pin
is used also as power source input to internal control circuit.
When the switch is turned on from CTRL(EN) control input, VDD(IN) and OUT is connected. In a normal condition, current
flows from VDD to OUT. If voltage of OUT is higher than VDD, current flows from OUT to VDD, since the switch is
bidirectional.
◎BD6512F/ BD6513F
◎BD6516F/BD6517F/BD2042AFJ/BD2052AFJ
Thermal shut down circuit turns off the switch and outputs an error flag when the junction temperature in chip exceeds a
threshold temperature. The thermal shut down circuit works when either of two control signals is active.
In BD6512F/BD6513F/BD6516F/BD6517F, the switches of both OUTA and OUTB become off and error flags are output to the both.
BD2042AFJ/ BD2052AFJ have dual thermal shutdown threshold. Since thermal shutdown works at a lower junction
temperature when an overcurrent occurs, only the switch of an overcurrent state become off and error flag is output.
◎BD6512F/BD6513F
◎BD6516F/BD6517F/BD2042AFJ/BD2052AFJ
The over current detection circuit limits current and outputs error flag when current flowing in each switch MOSFET
exceeds a specified value. There are three types of response against over current. The over current detection, limit circuit
works when the switch is on (CTRL・EN signal is active).
3-1 When the switch is turned on while the output is in shortcircuit status
3-2 When the output shortcircuits while the switch is on
3-3 When the output current increases gradually
When the supply voltage is below UVLO threshold level, UVLO circuit turns off switch to prevent malfunction. The UVLO
circuit works when either of two control signals is active.
◎BD6512F/BD6513F
◎BD2042AFJ/BD2052AFJ
Error flag output is N-MOS open drain output.
◎BD6512F/BD6513F
◎BD6516F/BD6517F/BD2042AFJ/BD2052AFJ
There is a parasitic diode between the drain and the source of switch MOSFET. Therefore, even when the switch is off, if
the voltage of OUT is higher than that of VDD, current flows from OUT to VDD.
There is not parasitic diode, it is possible to prevent current from flowing reversely from OUT to VDD.
The switch off status of the thermal shut down is latched. Therefore, even when the junction temperature goes down,
switch off and error flag output status are maintained. To release the latch, it is necessary to input a signal to switch off to
CTRL pin or make UVLO status. When the switch on signal is input or UVLO is released, the switch on and error flag
output are recovered.
Thermal shut down action has hysteresis. Therefore, when the junction temperature goes down, switch on and error flag
output automatically recover. However, until cause of junction temperature increase such as output shortcircuit is
removed or the switch is turned off, thermal shut down detection and recovery are repeated.
UVLO circuit prevents the switch from turning on until the V
while the switch turns on, then UVLO shuts off the switch.
UVLO circuit prevents the switch from turning on until the V
while the switch turns on, then UVLO shuts off the switch. UVLO has hysteresis of a 100mV(Typ).
At detection of over current detection, thermal shutdown, UVLO, Low level is output.
At detection of over current detection, thermal shutdown, Low level is output. Error flag output at over current detection
has delay filter. This delay filter prevents instantaneous current detection such as inrush current at switch on, hot plug
from being informed to outside.
When the switch is turned on while the output is in shortcircuit status, the switch become current limit mode soon.
When the output shortcircuits or large capacity is connected while the switch is on, very large current flows until the
over current limit circuit responds. When the current detection, limit circuit works, current limitation is carried out.
When the output current increases gradually, current limitation does not work until the output current exceeds the over
current detection value. When it exceeds the detection value, current limitation is carried out.
16/20
DD
IN
exceeds 2.3V(Typ.). If the V
exceeds 2.5V(Typ.). If the V
IN
DD
drops below 2.2V(Typ.)
drops below 2.3V(Typ.)
2009.05 - Rev.A
Technical Note