TS2596S
2A / 150KHz Buck Dc-Dc Converter
SOP-8
Pin Definition: 1. Input 2. SW Output 3. Feedback 4. Enable 5. 6. 7. 8. Ground
General Description
TS2596S Series are step-down switching regulators with all required active functions. It is capable of driving 2A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version. TS2596S series operates at a switching frequency of 150kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. It substantially not only reduces the area of board size but also the size of heat sink, and in some cases no heat sink is required. The ±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±10%. External shutdown is included. Featuring 70µA (typical) standby current. The output switch includes cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions.
Features
● ● ● ● ● ● ● ● ● ● ● Output Voltage: 3.3V, 5V & Adjustable version Adjustable Output Voltage Range 1.23V~19.5V ±4% 150KHz ±15% fixed switching frequency Voltage Mode Non-synchronous PWM control Thermal Shutdown and Current Limit Protection ON/OFF Shutdown Control Input Soft-start (SS) Function Short Circuit Protect (SCP) Operating Voltage Can be up to 24V Output Load Current 2A Low Power Standby Mode
Ordering Information
Part No. Package Packing
TS2596SCSxx RL SOP-8 2.5Kpcs / 13” Reel Note: Where xx denotes voltage option, available are 50= 5.0V 33= 3.3V Leave blank for adjustable version
Application
● ● Simple High-efficiency Step down Regulator On-Card Switching Regulators
Absolute Maximum Rating
Parameter
Supply Voltage Operating Voltage Range SW, EN Pin Input Voltage Feedback Pin Voltage Power Dissipation Output Voltage to Ground Storage Temperature Range Operating Temperature Range
Symbol
VCC VOP VSW, VEN VFB PD VOUT TST TOP
Limit
+28 +4.5 to +24 -0.3 to VCC -0.3 to VCC Internally Limited -1 -65 to +150 -40 to +125
Unit
V V V V W V
o o
C C
1 /9
Version: B07
TS2596S
2A / 150KHz Buck Dc-Dc Converter
Thermal Information
Parameter
Thermal Resistance* (Junction to Case) Thermal Resistance* (Junction to Ambient)
Symbol
ӨJC ӨJA
Maximum 15 70
2
Unit
o o
C/W C/W
Note: ӨJA is measured with the PCB copper area (need connect to GROUND pins) of approximately 1.5 in (Multi-layer)
Electrical Specifications (All Output Voltage Version)
(Ta = 25 C unless otherwise noted, VIN=12V for 3.3V, 5V, Adj version. ILOAD =0.2A)
o
Parameter
Output Feedback Efficiency Output Feedback Efficiency Output Feedback Efficiency Feedback Bias Current Oscillator Frequency Soft-Start Time Current Limit Oscillator Frequency of Short Circuit Protect Saturation Voltage ON/OFF Pin Logic Input Threshold Voltage ON/OFF Pin Logic Input Current Maximum Duty Cycle (ON) Maximum Duty Cycle (OFF) Quiescent Current Standby Quiescent Current SW Pin Leakage Current SW pin = 0 SW pin = -1 5V 3.3V ADJ
Symbol
VFB η VFB η VFB η IFB FOSC TSS ICL FSCP VSAT VIL VIH IL IH DC IQ ISTBY
Test Condition
4.5V≤ VIN ≤24V 0.2A≤ ILOAD ≤2A VIN =12V, ILOAD =2A 4.75V≤ VIN ≤24V 0.2A≤ ILOAD ≤2A VIN =12V, ILOAD =2A 7V≤ VIN ≤24V 0.2A≤ ILOAD ≤2A VIN =12V, ILOAD =2A VFB =1.3V (Adj version only) Rising edge of EN on to ICL Pear Current, no outside circuit VFB =0V force driver on When current limit occurred and VFB
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