L6738ATR STMicroelectronics, L6738ATR Datasheet - Page 11

• Manufacturer Part Number: L6738ATR
• Description: IC PWM CTLR 1PH STPDN 16-VFQFPN
• Manufacturer: STMicroelectronics

Specifications of L6738ATR

• Frequency - Max: 220kHz
• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Duty Cycle: 100%
• Voltage - Supply: 5 V ~ 12 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-11012-2

L6738A
3
3.1
3.2
Table 5.
Supply current and power-on
I
I
UVLO
UVLO
Oscillator enable and soft-start
F
k
Tss
Tssdelay
CC
CCDR
OSC
SW
Symbol
VCC,
VCCDR
Electrical specifications
Absolute maximum ratings
Table 4.
1. Current sense network needs to be properly bias and loop closed.
Electrical characteristics
(V
Electrical characteristics
VCC supply current
VCCDR supply current
Turn-ON threshold
Hysteresis
Main oscillator accuracy
Oscillator gain
Soft-start time
SS delay
V
CC
BOOT
V
CSP, CSN
CC,
Symbol
V
V
= 5 V to 12 V; T
PHASE
LGATE
EN
, V
V
Parameter
CCDR
UGATE
Absolute maximum ratings
to GND
to GND
to PHASE
to GND, VCCDR = 12 V, t < 200 nsec.
to GND
to GND, VCCDR = 12 V, t < 200 nsec.
to GND
to GND, VCC < 7 V
to GND, VCC > 7 V
to GND
All other pins to GND
j
= 0
(1)
°
EN = HIGH
EN = GND
UGATE and LGATE = Open
EN = GND
UGATE and LGATE = Open
VCC, VCCDR rising
OSC = open
Current sink/source from OSC
OSC = open
OSC = open, before SS
to 70
Doc ID 18134 Rev 1
°
Parameter
C unless otherwise specified).
Test conditions
Min.
180
4.5
4.5
-0.3 to VCCDR + 0.3
Electrical specifications
-0.3 to VCC + 0.3
-0.3 to VCC - 1.5
Typ.
5.12
5.12
-0.3 to 3.6
200
2.6
0.3
0.2
-0.3 to 15
-0.3 to 41
10
-0.3 to 7
9
8
-5 to 26
-8 to 30
Value
15
45
Max.
220
4.1
5.7
5.7
kHz/µA
msec
msec
Unit
kHz
mA
mA
mA
mA
V
V
Unit
11/32
V
V
V
V
V
V
V